The Simpson PW18EXT 18-in. Bit Extension for Strong-Drive SDPW Deflector Screw is a carbon steel driver extension from Simpson built specifically for the Strong-Drive SDPW Deflector screw system - a premium structural fastening solution for connecting non-load-bearing walls to trusses and joists. Fitted with a quick-change 1/4-in. hex bit holder, this 18-inch extension is engineered to maximize installation speed and safety during overhead and hard-to-reach fastening work, reducing reliance on ladders and helping keep installers on solid footing throughout the job.

Key Features

• Extra-length driver design - the 18-in. reach allows installers to fasten overhead and hard-to-reach truss, rafter, and wall connections from a safer standing position, reducing ladder use on the job site.
• 1/4-in. hex shank - compatible with most driver motors, so the extension integrates into a standard tool setup without adapters or extra equipment.
• Quick-change 1/4-in. hex bit holder - locks offset driver bits tight during fastening and releases them quickly for bit swaps, keeping installation moving at full speed.
• Designed for SDPW Deflector screw offset driver bits - pairs directly with T25-bit kit model PWKIT25T and T40-bit kit model PWKIT40T, ensuring a purpose-matched system for deflection, wood-to-wood fastening, and truss-to-plate connections.

Why This Product

• Purpose-built for the SDPW Deflector screw system - rather than a generic extension, this tool is engineered specifically around Simpson's Strong-Drive SDPW Deflector screw offset driver bits, giving you a matched, system-level solution for structural non-load-bearing wall connections.
• Improves job site safety on overhead installations - the 18-in. length lets crews reach overhead connections from the floor or a stable surface, offering a safer alternative to working from a ladder in tight or elevated spaces.
• Speeds up hard-to-reach fastening without sacrificing bit security - the locking quick-change hex holder keeps bits firmly seated under torque while still allowing fast bit changes, so installers spend less time fumbling and more time driving screws.
• Broad driver motor compatibility - the standard 1/4-in. hex shank works with most driver motors already on site, meaning no specialty tools or costly adapters are needed to put this extension to work.

Specifications

• Model Number: PW18EXT
• Brand: Simpson Strong-Tie
• Extension Length: 18 in.
• Shank Size: 1/4 in. hex
• Material: Carbon Steel

Approved Applications

• Deflection - connecting non-load-bearing walls to trusses and joists using Strong-Drive SDPW Deflector screws

Frequently Asked Questions

What screws is the PW18EXT bit extension designed to work with?

The PW18EXT is designed for use with the Strong-Drive SDPW Deflector screw system from Simpson Strong-Tie. It is specifically intended to be paired with SDPW Deflector screw offset driver bits, including the T25-bit kit (model PWKIT25T) and the T40-bit kit (model PWKIT40T).

Is the 1/4-in. hex shank compatible with standard drill and driver motors?

Yes. The 1/4-in. hex shank on the PW18EXT is compatible with most driver motors, making it easy to integrate into a standard tool setup without the need for adapters.

Why would I use an 18-inch bit extension instead of working from a ladder?

The extra length of the PW18EXT allows installers to fasten hard-to-reach connections - particularly overhead installations - from a safer standing position. This reduces the risk associated with ladder use and can improve overall installation speed and efficiency.

What material is the PW18EXT bit extension made from?

The PW18EXT bit extension is constructed from carbon steel, providing the durability and strength required for structural fastening applications in the Strong-Drive SDPW Deflector screw system.