Lippert 191025 JT's Strong Arm Travel Trailer Stabilizer Kit Eliminates annoying chassis movement Provides a rock-solid camping experience Dealer installation or do-it-yourself One-time installation/permanently attached Works with most jack applications Bolt-on installation; no welding required If unit has hydraulic jacks, three #314592 jack adaptor lugs are required If unit has electric stabilizer jacks, one #314597 adaptor kit is needed per set of electric stabilizer jacks JT's Strong Arm Jack Stabilizer system for travel trailers is a one time, permanent installation that virtually eliminates chassis movement in fifth wheels and travel trailers Stabilizers telescope into place when the jacks are lowered Turn of the "T"- handle on each stabilizer locks the system in place for a rock-steady RV Stabilizers retract with the jacks