RoadMaster 64" Double Hook, Straight Safety Cables - 8,000 lbs

RoadMaster 64" Double Hook, Straight Safety Cables - 8,000 lbs

Item # RM-646

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Roadmaster 64 Inch Long Safety Chains and Cables - RM-646
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  • Safety Cables
  • Towing a Vehicle
  • 8000 lbs GTW
  • 64 Inch Long
  • Snap Hooks
  • Straight Cables
  • Roadmaster
  • Coated Cables
Get the strength of steel and the security of spring-loaded clasps with this pair of vinyl-coated safety cables. Cables features spring hooks on each end for quick and easy attachment. Lowest Prices for the best safety chains and cables from Roadmaster. RoadMaster 64" Double Hook, Straight Safety Cables - 8,000 lbs part number RM-646 can be ordered online at or call 800-298-8924 for expert service.

  • All Info
  • Reviews (11)
  • Q & A (10)
  • Videos (1)
  • Photos
  • Why etrailer?

Roadmaster Safety Chains and Cables - RM-646

Get the strength of steel and the security of spring-loaded clasps with this pair of vinyl-coated safety cables. Cables features spring hooks on each end for quick and easy attachment.


  • Safety cables offer extra security for your tow system
  • Aircraft-type, galvanized steel construction offers superior strength
  • Heavy-duty, drop-forged steel hooks have spring-loaded latches for added security
  • Vinyl coating keeps the cables from scratching and chipping your tow bar
  • Made in the USA


  • Quantity: 2
  • Length: 64"
  • Capacity: 8,000 lbs

646 RoadMaster 64" Double Hook, Straight Safety Cables - 8,000 lbs

Video of RoadMaster 64" Double Hook, Straight Safety Cables - 8,000 lbs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Roadmaster Safety Chains and Cables - Safety Cables - RM-646 Review

Customer Reviews

RoadMaster 64" Double Hook, Straight Safety Cables - 8,000 lbs - RM-646

Average Customer Rating:  4.7 out of 5 stars   (11 Customer Reviews)

Get the strength of steel and the security of spring-loaded clasps with this pair of vinyl-coated safety cables. Cables features spring hooks on each end for quick and easy attachment.

- RM-646

have not had a chance to use them yet but look like just the ticket 655411

- RM-646

Pretty straight forward. These are required towing safety cables. The snap hooks make them easy to hook up and remove. Again at the right price. 566501

- RM-646

Product arrive within 4 days of order. Cables are just perfect for towing my 2016 Jeep JK with a modified bumper. 444965

- RM-646

Great product at good price 426286

- RM-646

Product was exactly what I was looking for and exactly as described. 412887

- RM-646

Great original product... 412412

- RM-646

Worked great 386007

- RM-646

have not used yet. but appears to be excellent quality 159732

- RM-646

good price. not too difficult to insta ll 136913

- RM-646

Excellent price and service. I had waited a month for another dealer to ship this cable set, so I called etrailer, they said they had it in stock and would ship it that day or the next. They shipped that day and followed up with shipping info and the invoice. Can't say enough about the customer service. Cables appear to be good quality and exactly what I wanted. 105286

- RM-646

Very well made. Easy to use. 6852


Ask the Experts about this Roadmaster Safety Chains and Cables

Do you have a question about this Safety Chains and Cable?

  • Base Plate and Tow Bar Recommendation for 1996 Suzuki X-90
  • For your 1996 Suzuki X-90 I recommend the Roadmaster XL Base Plate Kit # 118-16. Unlike the Blue Ox base plate kit that is also confirmed to fit your vehicle, this particular kit features removable drawbars that allow for a clean look when you aren't towing. All of the mounting hardware is included for a simple installation that doesn't require any welding. I have attached the written instructions that you can check out as well. Then for a compatible tow bar I recommend the Roadmaster...
    view full answer...

  • Can the Roadmaster # RM-645 Safety Cables Be Installed with the Hooks on the Base Plate Side
  • If you have the room on your base plates connection to securely attach the hook, then there will be no issue with using the Roadmaster # RM-645 Safety Hooks. I found another option for you. The Roadmaster 64 Inch Double Hook Safety Cables, # RM-646, is the better option for you. Theses cables have the same features as the # RM-645 cables that you referenced, but this set includes hooks with spring loaded latches on both ends of the safety cable. These cable will make connecting and...
    view full answer...

  • Recommended Items Needed for Flat Towing a 2015 Cadillac Escalade ESV Behind a Class C Motorhome
  • Your owners manual recommends to only flat tow four-wheel-drive vehicles with a two-speed transfer case that have an N (Neutral) and a Four-Wheel Drive Low (4n) setting. Please check your owners manual and see what other procedures need to be followed for flat towing your Cadillac Escalade ESV. If you determine you can flat tow your 2015 Cadillac Escalade you will need the following items: base plate kit, tow bar, a set of safety cables, tow bar wiring, and a supplemental braking system. My...
    view full answer...

  • Parts Needed to Flat Tow a 2004 Ford F-150 4x4 Behind an RV
  • For your 2004 Ford F-150 4x4, we can offer you everything you will need to flat tow the truck behind your RV. First you will need a base plate kit. I recommend # 495-1A that you referenced. As you know, when not in use, the part that is visible can be removed. (Note: if you have a Heritage series F-150, use base plate kit # 492-1.) I have included a link to the instructions for kit 495-1A below. Next, you will need a tow bar that is compatible with the base plate kit. The RoadMaster...
    view full answer...

  • Safety Cables to Flat Tow a Jeep Liberty Behind an RV
  • The safety cables I recommend the most are # RM-643. They are coiled but stretch out to 68 inches. The coiled design helps keep the cables off of the ground. If you want to go longer I recommend # RM-653. These are 80 inches long.
    view full answer...

  • Roadmaster Sterling All-Terrain Tow Bar With Standard Safety Cables
  • You can use standard safety cables with the Roadmaster Sterling All Terrain Tow Bar # RM-576, though you would need to get them separately with the RoadMaster 64" Double Hook, Straight Safety Cables # RM-646. Your other option is to use the Roadmaster Falcon # RM-522, which like the Sterling is an all-terrain, non-binding tow bar that is a motorhome mount. I've added links to video reviews of the cables and Falcon for you to check out.
    view full answer...

  • Can a 2012 Honda CR-V with Automatic Transmission be Flat-Towed Behind a Motor Home
  • Both the front-wheel-drive and all-wheel-drive versions of the 2012 Honda CR-V with automatic transmission can be flat-towed behind a motor home. Honda cautions that before flat towing your CR-V transmission fluid level and condition be checked. If you will flat tow often or for long periods (8 hours or more at a time), then it is suggested to change your transmission fluid at shorter intervals than specified in the manual. It is also necessary to follow a pre-drive conditioning process...
    view full answer...

  • Confirming Fit of Roadmaster # 1175-1 Base Plate Kit on 2012 Toyota Tacoma 4x4
  • According to my Roadmaster representative, the # 1175-1 is indeed compatible with your 2012 Tacoma 4x4. I typically recommend that folks confirm the flat towability of their vehicle, but it sounds like you are already on top of that. In addition to the tow bar and base plates, you will also need safety cables, a lighting solution and a supplemental braking system. For safety cables, I would recommend the # RM-646. There are several different wiring and braking solutions available....
    view full answer...

  • Parts Needed to Flat Tow a 2001 Saturn Coupe SC01
  • The Roadmaster EZ Base Plate Kit - Removable Arms # 52181-1 is confirmed to fit your 2001 Saturn Coupe SC01 and is compatible with the Quick Disconnects # RM-222 mentioned in your question and all Roadmaster tow bars. The Tow Bar Quick Disconnects are designed to work with the Roadmaster StowMaster, StowMaster All-Terrain or Falcon All-Terrain tow bars. If you have one of these tow bars then these parts will work great. If you do not yet have a tow bar, I recommend the Roadmaster StowMaster...
    view full answer...

  • What Base Plates Will Fit a 2004 Saturn Vue Redline Edition
  • We do have a set of base plates for the 2004 Saturn Vue Redline but the Roadmaster base plates will not fit a 2004 model. You can use the Blue Ox base plates, # BX3321. In order to use your Falcon tow bar you will have to use adapter # RM-031 that adapts the Roadmaster tow bar for use with the Blue Ox base plates. If you need safety cables, I recommend the straight cables, # RM-646, because the Falcon all terrain tow bar has cable guides on each arm. For lighting, you can use...
    view full answer...

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Info for this part was:

Expert Research:
Michael H
Video by:
Kathleen M
Updated by:
Laura H
Installed by:
Cole B
Installed by:
Randy B
Updated by:
Sarah W
Test Fit:
Shane H
Video by:
Jonathan Y

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