8 mm Nut Setter

The Teng Tools 8 mm hex driver bit gives you a purpose-built tool for one of the most common metric fastener sizes on any jobsite. Whether you choose the magnetic version for overhead and hard-to-reach work, or the retaining-ring version for applications where a mechanical grip is preferred, you get a 1/4 inch hex shank that drops straight into your drill or impact driver chuck.

The hex tip is sized precisely at 8 mm to maximize contact with the fastener flats. Full engagement means less rounding, less wasted effort, and longer service life for both the bit and the hardware you are driving. That matters when you are running dozens of fasteners on a single HVAC rough-in or electrical trim-out.

Sold as an individual bit rather than part of a bundled set, this driver lets you restock the exact size you have used up without buying duplicates of sizes still sitting in your case. For tradesmen who track their tool spend per job, singles purchasing is the efficient path.

The 1/4 inch hex shank is the industry-standard interface for power-driver accessories. It seats securely in quick-change chucks and conventional keyed or keyless chucks alike, so there is no adapter standing between you and the work. Slide it in, lock it, and drive.

Add this Teng Tools 8 mm driver bit to your kit and keep your most-used metric size ready to go whenever the next fastener needs to be set.