Feature Breakdown: InfiniteRule Lock for Demco eZ-Latch Trailer Couplers Video

A keen observation indeed, Brett. The mounting hole spacing on the Square D-Ring Tie-Down Anchor #ABS69FR is 3" horizontally and 3-1/4" vertically. I edited a picture for you to help illustrate.

You certainly can use the Trimax Coupler lock #TMX47FR with the Demco 2-5/16" Ez latch coupler like the #DM14040-81. The Demco coupler is 2-7/8" wide on the outside so it will undoubtedly fit with the Trimax lock, which is more or less…

Both styles of Demco couplers are going to hold up well but in general cast steel is considered to be better due to it's uniform and more consistent structure it provides. Stamped steel is typically considered a more cost effective solution due…

Yes, you can so long as your Demco EZ latch coupler is cast like item #DM14040-81 or item #DM37ZR. The InfiniteRule Lock for Demco eZ-Latch Trailer Couplers item #IR66FR works great with these couplers whether they're being towed or parked.

I think installing the Recessed Trailer D-Ring, #RR5K, that you have referenced, would be better than #LRB1, because the backing plate is going to help distribute the load from the ring which would be better for your wood decking and make for…

The etrailer A-Frame Trailer Coupler w/ Round Jack Hole #CA-5280-RB uses the standard a-frame angle of 50 degrees. The length from the rear of the coupler to where the coupler meets its narrowest point is approximately 9" long. I have include…

I would use a protractor, see photo, place the protractor on the edge of the inside of one side of the trailer frame and the other inside edge of the trailer frame should be parallel with the 50 degree line on the protractor. Another way to verify…

Yes, and no but I have one that'll do both. The Master Lock Trailer Coupler Lock item #ML389DAT you were looking at will fit a Demco A-Frame Coupler with EZ Latch item #12660-97SP but not gooseneck couplers. For a coupler lock that does both…

Hello Brett, thanks for reaching out. For you I recommend the InfiniteRule Coupler Lock #IR66FR. This lock is made specifically for the Demco EZ-Latch couplers, and it will work with both the 2" and 2-5/16" ball couplers. It has a 42,000 lb…

Personally I prefer the Demco Trailer Coupler #DM14976-52 with the composite handle over the Coupler #DM15791-81 with a metal handle. I feel it is easier to operate as it does not have the safety latch like you get on the metal handle. Since most…

First I want to make sure you verify your channel mount for the Demco Trailer Coupler #DM14040-81 has a 21K or larger capacity as often times they are less like the Demco #DM15349-52 which often times people look at and think it is a channel mount…

Since the mounting holes of the Demco Coupler part #DM15931-52 are 1/2 inch in diameter you'd want to source 1/2 inch diameter bolts Grade 5 or higher. Go with bolts and nuts long enough to fit through coupler.