findmall 9 Pair 1/8 Accuracy Wavy Parallel Block Set .0002 Hardened Accuracy Machinist Tools with Case

Product Description: Hardness: 50-55 HRc Parallelism: +/- 0.0002" Matched pair height: +/- 0.0002" Size (W x H x L)0.012"x(1/2"、5/8”、3/4"、7/8"、1"、1-1/8”、1-1/4”、1-3/8”、1-1/2”)x4-5/16" 1/8" 9 Pair Parallel Set -These are hardened steel are accuracy ground in multiple sizes of matched pairs. They are ground for tight tolerances on the top bottom edges. 1. Use these to be sure your work is square and flat on the bottom of your vise. 2. Place a parallel against each vise jaw rest your workpiece on top. 3. Parallels raise your work piece within the vise allowing more clearance for cutting tools. The holes in their sides are useful for clamping parallels for extra support.