Bosch SP515 Screw Pilot Bit Set, 1/4 in Shank, Hex Shank, Pack of 5 Socket Clip Rails Marks on porous or non-porous

Marks on porous or non-porous surfaces

Smooth drilling in glass

adjust the edge stop posts to your material

With Milwaukee's new Fluid drive hydraulic powertrain

Bosch SP515 Screw Pilot Bit Set, 1/4 in Shank, Hex Shank, Pack of 5 Socket Clip Rails Marks on porous or non-porousBosch hex shank screw pilot bits drill precise, clean pilot holes in wood, plastic and composite materials. Used for fast countersinking and counterboring in single operation, these pilot bits drill countersink pilot holes for flush screws. The drill bits are replaceable. The screw pilot bits provide adjustable countersink depth with an Allen wrench. The hex shanks are designed for reduced slippage and the shanks fit corded and cordless drills. Ideal