Irwin 4935078 Drill Bit Set, Multi-Material, 5-Piece, Steel, Uncoated

Irwin multi-material drill bits drill through just about any type of material out there - brick, block, tile, metal, wood, plastic and marble-they will 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 for centered starts with no walking, fast drilling and excellent hole quality in a variety of materials
• Double milled flute ensures fast, efficient removal of drilling dust and debris to increase speed and prevent clogging

• Catalog https://assets.unilogcorp.com/187/ITEM/DOC/Irwin_100003558_Catalog.pdf