Hss Cobalt Drill Bits Set 29PCS M35 Triangle Shank with Golden Ratio CO29. 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. As our valued customer, we will do our best to make sure the product you receive arrives to you on time and as expected. This item is in the category “Home & Garden\Tools & Workshop Equipment\Power Tool & Air Tool Accessories\Drill Bits”. The seller is “pardo14bb” and is located in this country: US. This item can be shipped to United States.

• Label: Linrui Tools
• Manufacturer: Linrui Tools
• MaterialType: Cobalt 5%
• NumberOfItems: 300
• ProductGroup: BISS Basic
• ProductTypeName: DRILL_BITS
• Publisher: Linrui Tools
• Studio: Linrui Tools
• Style: CO29