Set of 4 frame engaging truck adapters for 10,000, 12,000, 15,000 and 18,000 two post automotive lifts. Frame engaging adapters are ideal for lifting vehicles such as pickup trucks with frames. They provide direct contact to frames without the slipping associated when lifting on slippery, sprayed undercoatings with traditional rubber pads. Cradle provides secure fit to frame in tight spaces. Works with all Challenger above ground two post lifts. 15,000 & 18,000 two post automotive lifts require reducer busing kit part #10317.