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.
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2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;GS Life member,FMCA " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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