• Clamping Range: 1/32" - 5/8". Shank thread size: 7/16-20
• Special quenching treated key parts increases durability.
• Suitable for drill presses or lathes spindle accepts R8 shank.
• Self-tightening keyless feature, automatically increasing gripping force, high reliability, and stability.
• Widely used along with various drill machines, milling machines, lathes, boring lathes and electric hand tools.

Product description