For sale is a Group of (3) Index Plates. (2) Plates are 4-5/8" diameter, with 4" diameter mounting bolt-hole circle. One with (54) index positions; one with (30) index positions. (1) Plate is 4-1/2" diameter with 4" diameter mounting bolt-hole circle and (24) index positions. All three plates are 5/16" thick. Light corrosion from long-term shelf storage. Fast and inexpensive shipping via USPS small flat rate box.