Metallics QB1 Wood Bit Quik-Bit Flat 1/4" 6" (1pc)

The QB1 is a 1/4 inch flat wood boring bit with a 6 inch overall length, so it bores a 1/4 inch hole in wood framing and the usable depth is limited by that 6 inch length less whatever you need in the chuck. For running low-voltage or small cable through studs and joists, that is a single-pass bit, not a long auger for stacked plates.

The QB1 is a flat (spade type) wood bit, which is made with a hex-form shank on this style of bit, and it chucks into any 3-jaw keyless drill. Whether it locks into a 1/4 inch quick-change impact driver collet depends on the shank form, so if you are buying it specifically for an impact driver, confirm the shank before you commit.

A 1/4 inch flat bit like the QB1 is for small-diameter pass-throughs: thermostat wire, alarm and data cable, pilot holes for lag or structural screws. If you are pulling 12/2 or 14/2 NM cable through studs you want a larger hole, typically 3/4 inch or 7/8 inch, and an auger or self-feed bit cuts cleaner and straighter at that size. Flat bits also tend to wander on angled entries, so for deep boring through multiple plates an auger is the better tool.

No. The QB1 is a wood bit, intended for wood framing and similar soft material. Metal studs call for a step bit or a bi-metal hole saw, and masonry or concrete needs a carbide-tipped hammer-drill bit. Using a flat wood bit on either will kill the cutting edge immediately.

One bit per order. The QB1 ships as a single piece in a pouch, so if you are stocking a van or a facility crib and want spares on hand, order the quantity you need rather than expecting a multi-bit set.