• Single-fluted design for easier resharpening
• Anti-skid tip eliminates the need for center punching or pilot hole drilling
• Drill round holes in most metals (steel, brass, aluminum, copper), as well as in plastic and wood

Klein-Unibit® Step-Drill Bits are perfect for drilling multiple-size holes in thin sections of metal, plastic and wood using a single bit. Each Klein-Unibit® does the work of many drill-bit sizes. Drills round holes in most metals (steel, brass, aluminum, copper) up to 1/8" (3.2mm) thick as well as in plastic and wood. No center punching or pilot hole drilling is required on most sizes. The bits are easy to keep sharp, and the hole size is easily determined by the diameter markings that are permanently laser-etched in the flute areas.

Eliminates Skidding
Unlike standard-point twist drills with two cutting surfaces, the single-flute design of the Klein-Unibit® drill bit eliminates skidding. Single cutting-edge design assures penetration of softer materials at the proper speed, stops "hogging-in", helps to eliminate chatter and vibration. Hole is de-burred automatically by the next succeeding size. You can feel and see each step as the bit penetrates.

Smarthome product No.	Klein Tools product No.	Depth penetration for each step	Electric drill size	Number of Hole Sizes per Bit	Pilot hole required	Quick Reference No.	Size Range (Hole Diameter)
89022	59001	1/8"	1/4" and larger	13 in 1/32" increments	No	1	1/8" to 1/2"
89023	59003	1/8"	3/8" and larger	9 in 1/16" increments	No	3	1/4" to 3/4"
89024	59002	1/8"	1/2" and larger	8 in 1/16" increments	Yes,1/2" or larger	2	9/16" to 1"