Ryobi RID1801M (5133001168)

For rotary drilling only. Includes 5/32 pilot bit which must be used first. Ideal for drilling porcelain tiles up to a scratch hardness of 8. The drill bit will not walk, tape or center punching is no more→longer needed. Flat bottom parabolic flute ensures fast and efficient removal of drill dust and prevents clogging. Cuts nice, clean holes with very little or no chipping; operate drill motor 400-600 RPM

Diablo's new step drill bits bring exclusive technology to the electrician, plumber and HVAC contractor with fast, accurate cuts and increased stability in thin metals, PVC other plastic materials. Th more→e innovative split point tip design enables a fast, on point start resulting in increased durability and up to 6X longer life. An automated precision grinding process on each step reduces wear and delivers 2X faster cuts. Multiple hole sizes are made easy with laser etched step markings while increased step heights for common hole sizes makes drilling holes more efficient and faster. Designed with a 1/4 inch hex shank, these bits are impact ready and can be used with drills and impact drivers.

Milwaukee M/2 2-Cutter SDS-Plus Rotary Hammer Drill bits are the most durable 2-cutter bits with up to 20 percent more holes per charge in cordless rotary hammers. Additionally, M/2 features a centeri more→ng tip for exact spot drilling, wear mark indicator indicating when the bit no longer meets ANSI diameter requirements and a reinforced flute for durability and minimized vibration. The increased life and efficiency of the M/2 2-Cutter drill bit line provides the ideal solution in general concrete for and rotary hammer users.