- Hardened steel, precision ground parallel and square
- Clamps have screw holes at 45 Deg and 90 Deg to hold either square or round work
- Stepped groove construction permits high or low clamp mounting or small or large work
- Clamps do not project over the width of the block, permitting it to be used on the base, ends or sides
- 3/8-16 tapped holes permit mounting blocks on faceplates or angle irons
- Each block is 2-1/2" long x 3" wide x 2" high (63 x 75 x 50mm)
