Metallics BHD10 Bell Hanger Drill Bit Dia 5/16" 24" (1 pc)

The BHD10 is a 5/16 inch diameter bell hanger bit with a 24 inch overall length, so it bores a 5/16 inch hole and reaches through thick walls, sill plates, and stacked framing in a single pass. The 24 inch length is what separates it from a standard jobber bit, which tops out a few inches deep.

A bell hanger bit is made for fishing wire, not just making holes. The shank carries a hole near the tip so you can drill through the wall, feed the wire or pull string through that eye, and draw it back through the hole in one motion. The Metallics BHD10 does this at 5/16 inch diameter over a 24 inch reach, which suits low voltage, alarm, doorbell, and communication runs through plates and studs.

A 5/16 inch bore handles the small stuff: thermostat wire, doorbell wire, CAT cable, coax, and alarm conductors. It is not sized for romex bundles or conduit. If you are running 12/2 or 14/2 NM through studs, step up to a larger bell hanger or auger bit rather than forcing it through a 5/16 inch hole.

Order it as Metallics BHD10. That is the manufacturer part number for the 5/16 inch by 24 inch bell hanger bit, and it is the only model on the item, so there is no size or finish choice to specify.

No. The BHD10 is a bell hanger bit for wood framing and similar soft material, intended for fishing wire through studs and plates. Block, brick, or concrete calls for a carbide-tipped masonry bit instead, and running this bit into masonry will ruin the cutting edge.

One bit per order, supplied in a pouch. If you are stocking a van or a shop crib and want spares on the shelf, order the quantity you need rather than expecting a multi-pack.