Spiral Groove Step Drill Bit Set with High-speed steel and titanium coating proven durability in drilling holes. This Spiral Groove Step Drill Bit Set can replace 50 Pieces of different kinds of drill bits, and you can process 50 sizes of diameter holes. This Drill Bit Set with Engraved Sizes you can easily identify which size you need.

The split point tip is at 135° which allows you to cut faster and the two flute design also lets the material particles escape easily for a much more clean drilling operation. The tri-flatted shank is a great universal fit that will give you confidence while you work knowing that your drill bit is securely in place.

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!!! This Spiral Groove Step Drill Bit Set Has a Full Warranty For One Year !!!

Features:

• 50 SIZE IN 5 PIECE
• Drills holes of various sizes without changing bits.
• Engraved Sizes and Increased Cutting Speed
• Comes with padded Aluminum Case
• Self-starting - no need for a pilot hole.
• Cobalt coated to reduce friction and run cooler.
• Two-flute design, clears chips faster
• Allows particles to escape easily
• Smoother and rounder holes.
• Double cutting blades design
• Enables a faster and smoother cutting;
• Tri-Flatted Shank and135° Split Point Tip Design

Application:

This Spiral Groove Step Drill Bit Set can be used to chamfer, bur, and drill, or enlarge holes. It can work with stainless steel sheets, aluminum alloy, plastic material, and wood.

Specifications:

• Product: Spiral Groove Step Drill Bit Set
• Material: High-Speed Steel with Cobalt Coated
• Model: HSS 4241
• Cutting Angle String: 135°
• Quantity: 5Pcs
• Box Size: ( L x W x H): 152 x 107 x 42mm

Spiral Groove Step Drill Bits Parameters:

• 1 x 3/16" to 1/2" 6 Steps
• 1 x 1/8" to 1/2" 13 Steps
• 1 x 1/4" to 3/4'' 9 Steps
• 1 x 1/4" to 1-3/8" 10 Steps
• 1 x 3/16" to 7/8" 12 Steps

Package Included:

1 x HSS 4241 Spiral Groove Step Drill Bit Set 1 x Aluminum Case