T-shank design fits all combo and most U-shank jig saws

First carbide hole saws that allow operators to cut wood

3/8in (9mm) diameter boron alloy shackle

A two-step cutting action creates holes that are precise and clean

1 1/8 in. x 16 in. x 21 in. Rebar Demon SDS-Max 4-Cutter Full Ca T-shank design fits all combo1 1 8 in. x 16 in. x 21 in. Rebar Demon SDS Max 4 Cutter Full Carbide Head Hammer Drill Bit Up to 7X longer life versus standard 2 cutter hammer drill bits Diablo made Dura Carbide features up to 2X more carbide that withstands up to 1800F of intense heat to combat rebar hits versus standard bits that fail at 800F Impact Resistant 4 Cutter Full Carbide Head extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration