1-16mm Boring Chuck With Cones

This Mk2 Model B16 boring chuck supports drill bits from 1 mm up to 16 mm diameter. Its dimensions are 125 mm in length and 22 mm hex shank diameter; unit weight is 320 g. Built from hardened alloy steel with integral hardened steel cones, fully assembled and ready to use out of the box. The cone-based gripping system ensures high concentricity and resistance to slippage under high-torque drilling loads. The quick-tension action responds to linear push/pull motion only — no twisting or ratcheting required. Used extensively in M&E (mechanical and electrical) contracting for tasks including fire-stopping sleeve installation, cable tray drilling, duct penetration work and structural lining — wherever precision, speed and reliability intersect.