Spyder Hex 8 and Hex 10 Dual Locking Hole Saw Pilot Bit Extensions are engineered to deliver secure, extended reach for demanding hole cutting applications. Featuring Spyder AUTO LOCK Technology, this auto-locking extension allows for fast, tool-free installation while a secondary twist lock helps retain the hole saw for reliable performance. Designed for compatibility with both Hex8 (3/8-in hex, 1/2-20 thread) and Hex10 (1/2-in hex, 5/8-18 thread) arbors, it provides versatile jobsite functionality. Integrated hex arbor adapter torque pins help prevent the saw from becoming wedged onto the arbor, making saw changes quick and efficient. For safe operation, always use a drill motor equipped with a support handle and operate in standard rotary drilling mode only — not for use in hammer or impacting drill modes.

As a professional plumber, electrician or contractor, you put your tools through hell every day. You need tools that will last.

Spyder tools are made tough. They're built to perform under the harshest conditions, time and time again. Starting in 2007 with the Spyder Scraper, and continuing with award-winning 3×3, jig saws, hole saws and more, Spyder has quickly developed a reputation for making quality tools that pros trust.

While most other tool companies have long since stopped innovating, we've found ways to make blade attachments that work harder, last longer and finish the job faster.

If you make your living with power tools, you owe it to yourself to give Spyder tools a try.