Insize 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" Parallelism between top and buttom: .0003"Height difference of a matched pair: .0003"Hardened HRC55-62With two holes in each parallel $133.44 $117.96 Add to Cart The item has been added