Versatile 23-Hole Design: Each 1-2-3 Block features 23 holes, including 5 tapped holes for 3/8-16 clamping and 18 untapped holes, providing flexibility for various applications and setups.
Ultra-Precision Measurement Kit includes: 2x 1-2-3 blocks and 10x parallels (1"x2"x3"), Hardened alloy steel (58-62 HRC), precision ground on all 6 surfaces for wear resistance in daily toolroom use.Durable aluminum case with shockproof EVA foam.
Premium Chrome Finish: The chrome finish enhances durability and provides a sleek, professional appearance, making these blocks a valuable addition to any workshop.
Exact Dimensions & Tolerances: Measuring 1"x2"x3" with a size tolerance of +0.0002", parallelism of 0.0002", and pair height tolerance of 0.0002", these blocks are designed for precision in every measurement.
10 Pairs of Parallels for Precision Work: Crafted from premium alloy steel, hardened to 58-63HRC, these parallels are ideal for layout and fabrication work, ensuring precise measurements and long-lasting use.
