INTOO Hss Cobalt Drill Bits Set 29PCS Triangle Shank, Industry Drill bits with Golden Ratio Tip. SPECIFICATIONS: 29PCS COBALT DRILL BIT SET: 1/16,5/64,3/32,7/64,1/8,9/64,5/32,11/64,3/16,13/64,7/32,15/64,1/4,17/64,9/32,19/64,5/16,21/64,11/32,32/64,3/8,25/64,13/32,27/64,7/16,29/64,15/32,31/64,1/2. Sizes from 1/8 to 1/2 with triangle shank. GOLDEN RATIO TIP: From size 5/32″ with patented “Golden Ratio Tip, which especially designed for heavy duty purpose, effect clean&smooth holes on hard metal like stainless steel, and moreover, at least 3 times longer life. COBALT 5% MATERIAL: suitable for stainless steel or any hard metal, significantly increases the ware-resistance and durability. STORAGE BOX: strong metal box. HOW TO USE: controlling the drilling speed by lowest RPM would make drill life much longer than 3 times. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. We usually respond within 24 hours on weekdays. Thank you for shopping at our store. This item is in the category “Home & Garden\Tools & Workshop Equipment\Power Tool & Air Tool Accessories\Drill Bits”. The seller is “resha-9661″ and is located in this country: US. This item can be shipped to United States.

• Type: Drill Bit
• Color: Blue
• Brand: INTOO
• Suitable For: Drill