Built to withstand impact-driver torque, this Milwaukee SHOCKWAVE Impact Duty #1 square recess power bit delivers up to 50x the life of standard bits. Custom Alloy76 steel with proprietary heat treatment, a Wear Guard tip for added tip life, and a Shockzone geometry that absorbs peak torque keep the bit driving deck screws, Robertson cabinetry, and structural fasteners without snapping or stripping.

• Tip: #1 square recess (Robertson)
• Length: 2" power bit, standard chuck length for everyday driving
• Shank: 1/4" hex, accepts impact drivers and standard chucks
• Steel: Custom Alloy76 with heat treatment tuned per tip
• Geometry: Shockzone shock absorption zone behind the tip
• Tip finish: precision-machined contact surface with laser-etched size marking
• Life: up to 50x standard bits in impact applications

Tip match. #1 square recess fits #5-#8 cabinetry, hinges, light electrical, and trim screws. #2 square recess is the jobsite default - #8-#10 deck screws, drywall, framing, and the most common Robertson cabinetry fasteners. #3 square recess fits #12-#14+ heavy framing, lag-style fasteners, and structural screws.

Length match. 1" insert bit pairs with a magnetic bit holder for confined cabinets and trim work. 2" power bit is the standard direct-chuck length for everyday deck and framing work. 3-1/2" extended length reaches into stair stringers, deep joists, and behind cabinet returns where a 2" bit cannot seat in the recess.

Tip: match the bit number to the screw recess exactly. A #1 bit in a #2 screw cams out under impact load; a #2 bit in a #3 screw rounds the recess. Replace any bit that starts skating in the recess - a worn square tip strips fasteners even when it still looks intact under the eye.