ALL-CARB 1Pair 2-4-6 Blocks 23 Holes Matched Pair Hardened Steel Precision Fit for Milling Machine

Size: Precision gage block 2 x 4 x 6 inch Feature: 23 holes consists of 5 tapped holes that are 5/8-11 for clamping and 18 untapped holes Material: Made of precision-grade tool steel hardened and ground on all 6 sides of block Application: Calibrate equipment, space workpieces, or collect exact measurements Package list: 1 Pair precision gage block 2 x 4 x 6 inch