Artu Usa 01070 Tungsten Carbide & Cobalt Tip Multi-Purpose Drill Bit 1/2" Mailbox / Post Combo Nap Size: 3/4" x 18"

Nap Size: 3/4" x 18"

Height:                         13

Outside dimension: 6-7/10" x 6-7/10"

It can be used on both asphalt and concrete and is designed to be used year-round

Break-off attachment screw for permanent installation with no plumbing changes

Artu Usa 01070 Tungsten Carbide & Cobalt Tip Multi-Purpose Drill Bit 1/2" Mailbox / Post Combo Nap Size: 3/4" x 18""ARTU" MULTI PURPOSE DRILL BIT 1 2" For rotary or percussion drilling For masonry, ceramic tile, concrete, brick, fiberglass, Plexiglas, glass, cast iron, hardened steel, granite, marble & wood Tungsten carbide & cobalt tip Chrome vanadium steel shank Withstands heat up to 1900 deg. F Resharpen on a high quality grinding wheel Carded.