findmall Ultra Precision 2 Matched Pair 1-2-3 Blocks 23 Holes .0002" Machinist 123

Key Features: Heat treated and case hardened to HRC 57-62. Made of precision-grade tool steel hardened and ground on all 6 sides of block. Accuracy and squareness on all sides within 0.0002". 23 holes includes (5) 3/8-16 threaded holes for clamping and (18) untapped holes. Cross drilling design allows for efficient use of lower weight with maximum strength. Dimensions- 1" × 2" × 3", 2.1 lbs. weight. 100% Satisfaction Guaranteed! Please check product compatibility carefully to ensure it is the product you need. So as not to waste your time and energy on return. Package Including: 4 × 1-2-3 Blocks as the picture