Simpson PW18EXT 18-in Bit Extension for SDPW Deflector Screw 1/4-in Hex Shank Quick-Change Holder Molders the nail hole material is

the nail hole material is not removed with positive-angle nailing

secure fastening surface on roofing tiles

the HB410 mounts to the top chord of the supported member

precise speed adjustments

includes a spindle safety guard

Simpson PW18EXT 18-in Bit Extension for SDPW Deflector Screw 1/4-in Hex Shank Quick-Change Holder Molders the nail hole material isThe Simpson PW18EXT 18 in. Bit Extension for Strong Drive SDPW DEFLECTOR Screw from Simpson Strong Tie is a premium carbon steel driver extension engineered for use with the Strong Drive SDPW Deflector screw system. Designed to connect non load bearing walls to trusses and joists, this 18 inch extension with a quick change hex bit holder maximizes installation speed and safety, making it ideal for overhead and hard to reach fastening applications