- Crafted from hardened steel, these 1-2-3 blocks deliver exceptional durability and reliability in demanding machining environments. - Each block is ground and hardened on all sides, ensuring compatibility with all types of machine tools for versatile application. - Achieve unparalleled precision with high-precision milling parallel clamping blocks, featuring an accuracy of up to 0.0001 inches to meet stringent specifications. - Designed with a total of 23 holes, including (5) 3/8-16 tapped holes for secure clamping and (18) unopened holes for flexibility in setup. Applications: - Ideal for ensuring precise alignment and support in milling, drilling, and grinding operations. - Perfect for use in fabrication shops or production lines where consistent, accurate measurements are critical. - Useful in setup and assembly tasks for jigs and fixtures, enhancing productivity and reducing setup time. Invest in these 1-2-3 blocks for a reliable solution that enhances your machining precision and efficiency.