<h3>Key features</h3><ul> <li>1.MT3 Integral Shank &amp; Self-Tightening Design: Direct MT3 Morse taper shank ensures zero slippage during high-speed drilling; Self-tightening mechanism locks securely without keys, saving 50% tool-change time for milling and CNC machines.</li> <li>2.Titanium Coated Jaws for Extreme Wear Resistance: Titanium coating on hardened steel jaws boosts surface hardness to HRC 50+, reducing 30% jaw wear and extending 2X lifespan even under 1,500 RPM heavy-duty operations.</li> <li>3.0.005" High Precision with ±0.0025" Runout: Precision-ground chuck body achieves near-zero runout (±0.0025"), enabling smooth drilling in metal, wood, and composites without wobble or hole deviation</li> <li>4.1/8"-5/8" (3-16mm) Wide Grip &amp; Integral Structure**: Monoblock construction eliminates alignment errors; Wide clamping range handles twist drills, end mills, and countersinks for versatile workshop tasks.</li> <li>5.APU16 Wrench Included for Quick Installation: Integrated wrench slot and bundled APU16 spanner allow one-minute mounting/dismounting, compatible with Bridgeport, Lathe, and Drill Presses.</li> </ul><p>Free shipping included. 30-day hassle-free returns.</p>