Irwin 12 In. x 1/4 In. Drill Bit Extension Pack options:Pack of 1 This low-pressure polyurethane foam expands

This low-pressure polyurethane foam expands quickly to fill cavities

plus a cutter that drills a flat-bottomed counterbore that the screw head fits into

square shaft measuring 2-7/8 in

The blades are made of carbon steel for durability and strength

Power up this cordless screwdriver anywhere with micro USB (universal serial bus) charging

Irwin 12 In. x 1/4 In. Drill Bit Extension Pack options:Pack of 1 This low-pressure polyurethane foam expandsLock n Load quick change extension. Recommended for all 1 4" grooved hex shank drill and spade bits requiring extra reach. 1 4" shank. Slide back sleeve to release. Internal hex drive eliminates slippage. Simply load product in chuck until product locks. Follows 11 16" and larger bits through hole. Carbon steel construction sleeve and body fur durability and life. %search_data%4935705