Insize 6532-10, PARALLEL SET, 10 pairs, 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8, 1-1/2, 1-5/8″, 6928640379345

Parallelism between top and buttom: .0003″
Height difference of a matched pair: .0003″
Hardened HRC55-62
With two holes in each parallel