Metal Hole Cutting Tools and Multi-Purpose Hole Saws

Step Drill Bits

Jobber Length Drill Bits

Drill Bit Sets

Machine Thread Taps

Metal Hole Punches (Electrical Knockout Punches)

Multi-Purpose Hole Saws & Accessories ... New!

Check Out Our Competitive Prices

All Jobber Length Drill Bits and Step Drill Bits have Split Points and come in two different materials:

The Split Point reduces �walking� which is the tendency of a spinning bit to rotate away from the point at which you want to drill
The High Speed Steel (HSS) allows the bit to cut faster than High Carbon Steel. At room temperature, HSS and high carbon steel have an equivalent hardness; at elevated temperatures, HSS become advantageous
The Titanium Nitride (TiN) coating is an extremely hard ceramic. It is often used as a coating on HSS to improve hardness and durability

	Step Drill Bits Self-starting step drill bits offer a unique tip design which eliminates not only skidding, but also the need for center punching. The spiral flutes of RUKO high-performance step drill bits are CBN-ground from the solid hardened form. Because CBN (cubical boron nitride) is a much harder abrasive than even silicon carbide or corundum, a better and sharper cutting edge is achieved without burrs. Because of this higher dimensional precision, the step drills will last considerably longer while maintaining precise process tolerances. Available in High Speed Steel and Titanium Nitride-coated (TiN-coated) High Speed Steel, the added titanium nitride coating increases the surface hardness to approximately 2300 HV and the heat resistance to 1100�F (600�C).
	Jobber Length Drill Bits Jobber-length drills are the most common type of drill bit. The length of the flutes is ten times the diameter of the drill, meaning they will drill a hole that is 10D deep. These high performance twist drill bits are suitable for all normal drilling in conventional materials. Available in High Speed Steel and Titanium Nitride-coated (TiN-coated) High Speed Steel, the added titanium nitride coating increases the surface hardness to approximately 2300 HV and the heat resistance to 1100�F (600�C).
	Drill Bit Sets Drill bit sets are available for step drill bit and jobber length drill bits. These convenient drill bit kits include: Three-piece Step Drill Bit Set - High Speed Steel, bright finish, spiral fluted with split point. Drill bit size 1: 6 steps from 3/16" to 1/2" with 1/16" increments. Shank size 1/4" Drill bit size 2: 13 steps from 1/8" to 1/2" with 1/32" increments. Shank size 1/4" Drill bit size 3: 9 steps from 1/4" to 3/4" with 1/16" increments. Shank size 3/8" 21-Piece Jobber Length Drill Bit Set with fractional sizes from 1/16" to 3/8" in increments of 1/64", in high-speed steel or Titanium coated (TiN) high-speed steel, 118 degrees point 29-Piece Jobber Length Drill Bit Set with fractional sizes from 1/16" to 1/2" in increments of 1/64", in high-speed steel or Titanium coated (TiN) high-speed steel, 118 degrees point
	Machine Thread Taps High speed steel (HSS) machine thread taps are available in nine sizes: 4-40 to 3/8-16 coarse UNC thread taps and 4-48 to 3/8-24 fine UNF thread tap sizes Spiral point, chamfer type B
	Metal Hole Punches (Electrical Knockout Punches) Metal hole cutting tools include metal punches, die and draw bolt: (4) 22, 22.5, 30, and 30.5 mm pushbutton/pilot device mounting hole sizes (6) 1/2 inch to 2 inch mounting (trade) hole sizes
	*New! ...* Multi-Purpose Hole Saws & Accessories Ruko bi-metal saws have an alloy steel jacket and cutting edges of either high speed steel or high speed steel Cobalt 8. Available in various sizes from 9/16 inch (14 mm) to 8 1/4 inches (210 mm). High Speed Steel Saws High Speed Steel Cobalt 8 Saws Accessories - Arbor Holder Assemblies with Pilot Drill for HSS and HSS Co8 Hole Saws and HSS and HSS Co5 replacement pilot drill bits

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