Atlas 20806 Fixed Width Wheel Support AdapterAtlas 20806 Fixed Width Wheel Support Adapter 1,650 lbs. Capacity Fits 15" 17" Tire Width For Use With Two Post Lifts with 1 1 2" or 2" Holes When used as a set of four, the Atlas 20806 Fixed Width Wheel Support Adapter can fast transform a two post lift from chassis support to wheel support. This wheel adapter is easy to fix or remove on all Atlas two post lifts and most two post lifts on the market with 1 1 2" to 2" arm holes. Adapter is best suited