They hold bits in their head and connect their drive end to a power tool
Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits
Slips 3-1/2
2 Bolt Flange Bearing
50 VA rating
3M DBI-SALA 1107800 Delta Full Body Harness, L, 420 lb, Vest, Back/Front D-Ring 22PP02 They hold bits in theirFull Body Harness, Harness Style Vest, Chest Strap Buckles Mating, Harness Color Yellow, Harness D Ring Material Steel, Harness Sizing L, Includes Padding No, Leg Strap Buckles Tongue, Padding Location No Padding, Torso Adjustment Cam, Weight Capacity 420 lb, Harness Application Climbing, D Ring Locations Back, Chest, RFID Equipped Yes, Industry Construction, General Industry, Oil and Gas, Transportation, Utilities, ANSI Standards Met ANSI Z359. 1