Metallics QB9 Wood Bit Quik-Bit Flat 3/4" 6" (1pc)

The QB9 is a 3/4 inch flat wood boring bit with a 6 inch overall length, so it bores a 3/4 inch hole and the usable depth is limited by that 6 inch length once you account for the portion held in the chuck. That is enough to pass straight through a 2x4 stud or a doubled top plate for cable runs.

A 3/4 inch hole, which is what the Metallics QB9 bores, gives room to pull multiple runs of common residential NM cable through a single stud penetration, which is why 3/4 is the size most electricians default to for rough-in boring. For larger bundles or conduit sleeves you would step up to a bigger diameter bit.

A flat (spade) bit such as the QB9 is for fast, straightforward boring in wood framing: cheap to replace, easy to sharpen, and it clears a 3/4 inch hole quickly in a stud or plate. An auger bit pulls itself through and tracks straighter in deep or angled holes, and a self-feed bit is what you want for repeated large-diameter boring through doubled plates. For routine stud drilling on a rough-in, the spade bit is the standard tool.

One bit per pack. The QB9 ships as a single 3/4 inch flat wood bit in a pouch, so if you are stocking a crew or a service van you order one per bit you need rather than buying a graduated set.

It is a wood boring bit, so solid framing, plywood, OSB, and similar wood panels are all in scope. Back the panel or slow the feed as the point breaks through to limit tear-out on finished plywood faces. It is not a bit for masonry, tile, or steel.

Order Metallics part number QB9. That designation covers the 3/4 inch diameter, 6 inch flat wood bit, single piece. There is one configuration, so there is no finish, length, or pack option to specify with it.