Irwin Multi-Material Jobber Length Bits 5/16" X 4-3/4" Size:5/16" X 4-3/4" made from durable chrome plated

made from durable chrome plated steel

Ball retention design for quick-change applications

Includes two accessories per pack for added value

spans wider boards

Numerically Controlled Machined Edges

Irwin Multi-Material Jobber Length Bits 5/16" X 4-3/4" Size:5/16" X 4-3/4" made from durable chrome platedMulti Material Jobber Length Bits Features: IRWIN Multi Material drill bits drill through just about any type of material out there brick, block, tile, metal, wood, plastic and marble theyll even drill through multiple materials at the same time. These versatile bits are designed specifically for rotary drilling, but are tough enough to be used with hammer drills. Carbide tip has a unique diamond ground, four facet design with sharper cutting edges