Oneway Talon Chuck System
This is an ideal chuck for mini and mid-size lathe owners who want a power-grip, key-operated chuck. Its perfect for lathes with a 16" swing or less! Features single-hand key operation, patented over-extension safety system, 4-jaw scroll chuck and smooth-glide base jaw design. Chuck has 3-1/2" body diameter and standard #2 jaws. With nickel-plated body and hardened base jaws. Over-extension safety system prevents the base jaws from coming loose during operation. Base jaw slide design allows 50% more contact area, adding to longer life and easier chuck operation. Weighs 3.4 lbs.  Requires a threaded insert - sold separately.