Have you ever considered an easier alternative to hand cranking your pop-up trailer? One of our customers has designed a speed crank which fits into any electric or cordless drill w/3/8" or larger drill chuck.
The fittings are made of pre-heat treated alloy steel for wear resistance, and has a black oxide finish which inhibits corrosion.
There is a fitting designed for cranking your trailer/lowering and raising your stabilizer AND a fitting for lowering/raising the scissor type stabilizer on a travel trailer.