The Irwin hole saw mandrel accepts bi-metal hole saws from 9/16" to 1-3/16" in diameter. The hex shank fits both 3/8" and 1/2" drill chucks. The threadless design prevents bind-up during operation, and the removable pilot drill allows easy replacement when worn.

• Hex shank - fits 3/8" and 1/2" drill chucks
• Accepts hole saws from 9/16" to 1-3/16"
• Threadless design prevents bind-up
• Removable pilot drill for easy replacement
• Tough, durable construction