Flex Head Ratchet Set Countersink Drill Bits making them suitable for a

making them suitable for a variety of work environments under cold weather

Velcro at the wrist ensures a snug fit

harder than 4241 HSS used in other similar drill bit sets

Dust-Free solution - the Rhombus-shaped patent design achieves better performance on particles exhaust

reduces friction and heat generation

Flex Head Ratchet Set Countersink Drill Bits making them suitable for aMost Compact and Low Profile Head: 1 4", 3 8", and 1 2" 4 piece compact head ratchet set. A 3 8 Inch drive on a 1 4 Inch body allows extraordinary access in tight spaces, for superior reach to recessed fasteners in engines, machinery, and confined workspaces Precision 90 Tooth Gear: 90 Tooth Gear = 4 Swing Arc. 4 swing arc technology requires 60% less movement space than standard 72 tooth ratchets, delivering surgical grade control for stubborn bolts