Daystar's new polyurethane Hi Lift jack isolator secures the handle on your Hi-Lift jack when the jack is not in use, and makes transporting your Hi-Lift jack much quieter and easier. These 1" thick cast polyurethane blocks fit perfect and simply slide over the jack handle and the jack's I-beam to keep them secured together while traveling down those bumpy roads. No more rattling or lost jack handles! Daystar isolator fit all Hi-Lift brand jacks.As with all Daystar Products, Hi-Lift Jack Handle Isolator are made in the USA!corrosion-free polyurethane construction is durable and will not crack or warp,cushioning retainer clip to keep jack handles secured to the jack itself,prevents jack handle from clanking around, rattling or damaging nearby items,color black,