INTOO Hss Cobalt Drill Bits Set, 21PCS Triangle Shank Industry Drill Bits with Golden Ratio Tip

INTOO Hss Cobalt Drill Bits Set 21PCS Triangle Shank,Industry Drill bits with Golden Ratio Tip,

INTOO Hss Cobalt Drill Bits Set, 21PCS Triangle Shank Industry Drill Bits with Golden Ratio Tip

Specifications: 21PCS 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 with triangle shank. Product Feature: Material:HSS M35 (COBALT 5%) Angle Point: 135 Degree with Golden Ratio Tip. Shank Type: Triangle Shank Hardness: 63-64 Rockwell Application: widely used for hevery industry purpose in hard stainless still or any hard metal. Instructions: Simply insert drills to chucks or power tools,suggest RPM:500R/M Precautions: Make sure to put on masks and gloves before drilling. Keep cool or discontinuous use will largely prolong drill life. High performace and reliable quality to be promised by INTOO!

Key Features

• ✅ SPECIFICATIONS:21PCS 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.Sizes from 1/8 to 3/8 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.

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