Klein Tools KTSB03 Step Drill Bit Double Fluted #3, 1/4 to 3/4-Inch Expander Features a quarter-turn full-port brass

Features a quarter-turn full-port brass ball valve that allows for easy on / off control of the supply line

Features include rugged nylon construction

This simple

Use it to measure the pressure drop across coils and filters or in ducts and systems

UL® recognized

Klein Tools KTSB03 Step Drill Bit Double Fluted #3, 1/4 to 3/4-Inch Expander Features a quarter-turn full-port brassKlein Tools KTSB03 Step Drill Bit Double Fluted #3, 1 4 to 3 4 Inch These Double Fluted Step Drill Bits provide faster cutting and drilling than single flute bits. The easy to read step markings and targets save time when drilling holes. Thick 3 8'' hex shank provides a firm, positive grip and won't spin out in the drill. Two flutes cut faster and keep bit cooler Fast starting, non walking drill tip High visibility silver targets for primary hole