Rectangular 4" x 5" top with 7/8" thick rubber pad, 1 1/2" diameter pin and 3/8" step. This pad assembly fits most Ammco two post lifts as well as some Ben Pearson, Challenger, and Rotary. Heavy duty steel top plate with thick molded rubber pad, 2 bolt 3 1/4" center to center. These are normally in stock and ship the same day or the next business day. Please measure before you order.