2 Pc Precision 25-50-75mm Blocks 23 Holes Parallel Clamping Metal Block Lathe Tools Milling Drilling

Brand New 2 Pc 25-50-75mm Precision Blocks Metric Version of '1-2-3' Blocks Has 23 Holes With 5 holes tap to 3/8-16 TPI and 18 untapped holes With 9mm Diameter Made Of Hardened Steel With Hardness of 56 - 60 RC Size Within +/- 0.005 mm, Matched Pair Accuracy 0.005 mm Flatness 0.005 mm, Parallelism 0.005 mm Precision Ground On All Six Sides Shipping Weight: 2 Lbs *Estimate Only* Case Included Block Overall Dimension: 3''L x 2''W x 1''H *Estimate Only* Quantity: 1 Set (2 Pc Per Order) Small Freight Item