Extend and retract stabilizing jacks with your electric drill. Spare yourself the physical motions by using these attachments. Effortlessly set up and stabilize your RV! Zinc plated steel is long lasting and resists rust. 1/4" shank. 3/4" hex. Other styles available. 94-8670 is "J" hook style. 94-8672 is for slotted "T" style. 1 per card.