These adapter drop-ins have a 2" diameter and are designed for use with Rotary Lifts featuring three-stage arms. They come complete with (4) FJ6214 adapters, storage brackets, and a set of (4) 5/16-18 PHMS for mounting the brackets into the pre-drilled holes found on all recent model Rotary Two Post Surface Lifts. These components are genuine Rotary parts, ensuring reliable performance and compatibility for auto technicians.