Keyhole drill chuck, 1/2- 20 UNF

Spanner drill chuck, 1/2" - 20 UNF, 1.5-13.0 mm 56T805 by GRAPHITE is a chuck with an internal thread of ½" - 20 UNF, which is designed to hold drill bits with a cylindrical shank of 1.5-13.0 mm. It provides secure clamping of the jaws and stable guidance of the tool when used on drills with a suitable spindle. A spanner is included for efficient tightening and loosening of the chuck. This is a GRAPHITE spanner drill chuck - suitable for workshop and assembly applications requiring repeatable, mechanical clamping.