They are actually made for motor homes but work very well on my 40' 5er. I would buy the ones with a small slider marker on the front to back level if I ever need to replace them. The slide marker takes the guesswork out of positioning the 5er pin for re-hitching. Jut place the slider where the bubble is before unhitching, and raise/lower the bubble back to the slider for re-hitching. Right now I use length of small chain to adjust the pin height for re-hitching.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"