5Pcs Step Drill Bit Set with Automatic Center Punch, HSS Titanium High Speed Steel Step Drill Bits, 50 Sizes Step Bits for Metal, Aluminum, Wood, Plastic

Material: High speed steel, titanium coated Drill Bit Specifications: 10-stage 3/8" drill from 1/4" to 1-3/8" Grade 11 3/8" Drill Bit (3/16" through 7/8") 9 Grade 3/8" Drill Bits from 1/4" to 3/4" 12 Grade 1/4" Drill Bit (1/8" to 1/2") 6-stage 1/4" from 3/16" to 1/2" Center punch specifications: Thimble hardness: Hardness: HRC 58-62 Length: 5" Weight: 550 grams/1.21 pounds (including case) Package includes 5 x step drill bits 1 x Center Punch

• Premium Materials: Industrial HSS cutter body and titanium nitride coating ensure maximum durability and sharpness. Reduces friction and extends edge life in extreme temperatures.
• EXCELLENT FEATURES: 118° flipping head speeds up cutting while preventing deflection. The double-edged design makes for a smoother cut and makes it easier to dislodge material particles for use in power drills and high-impact drilling machines.
• DRILL MULTIPLE SIZE HOLES: Drill kit includes 5 standard step bits that replace 50 individual drills. Suitable for metal/wood/plastic/aluminum/copper and other metal sheets.
• AUTOMATIC CENTER PUNCH: The punch creates a powerful impact when pressed against a surface, the S2 steel spring punch provides extreme precision and accuracy.
• ALUMINUM STORAGE CASE: All bits come in a well-organized storage case for easy transport and storage. Ideal for home DIY, handyman and professionals.