Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal

Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal, Stainless Steel, Cast Iron - -. Specification - 5Pcs cobalt drill bit 8mm 5/16inch, straight shank, 75mm/2.95inch flute length, 116mm/4.56inch overall length. 。 Material - Hss jobber drill bit made of M35 Cobalt High Speed Steel, fully ground process, improving abrasive resistance and drilling life. 。 135 Degree Split Point - Twist drill bits with 135 degree split point, self-centering, prevents walking and makes drilling precise and faster. 。 Multiple Application - Cobalt drill bit is perfectly suitable for hard metals such as stainless steel (0.5-8mm thickness) and cast iron. can be used for wood, aluminum alloy and other softer metals. 。 Usage - Round straight shank drill bits allow use with a wide variety of tool holding systems, BUT drilling metal is recommended for use on bench drills. 。 Specification。 Package: 5Pcs Hss Twist Drill Bits 8mm。 Material: High Speed Steel M5 with 5% Cobalt。 Color: Champagne。 Shank: Straight Round Shank。 Split Point: 5 degree。 Shank / Cutting Edge Diameter: 8mm/0.inch。 Flute length: 5mm/2.95inch。 Overall length: 6mm/4.56inch。 M5 Grade Cobalt Steel。 .Cobalt drill bits are made of high speed steel with certain percent cobalt.。 2. The 5-percent cobalt is known as M5 grade. The cobalt increases the strength of the steel and makes it more heat-resistant.。 . Cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened without damaging the cutting edge allowing it to drill more than hss drill bits.。 How to Use Cobalt Twist Drill Bits?。 - Hand drills are suitable for drilling low hardness materials.。 - Drilling Metal is recommended for use on bench drills.。 - Mini twist drill bit can NOT be used in the impact drill.。 - Ensure the left and right cutting edges of the drill are symmetrical when drilling.。 - Observe the uniformity of the spark while drilling, adjust the pressure in time, and pay attention to the cooling of the bit.。 - Please use with cooling liquid to prolong the working life of the drill bits and to avoid overheating and breakage.。 Kindly Note: Please allow -2mm errors due to manual measurement, thank you for your understanding! 。 。 。

Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal
Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal
Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal
Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal
Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal

Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal

Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal,Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS,Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal, Stainless Steel, Cast Iron - -, with Straight Round Shank for Drilling Hard Metal Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber.

Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal
Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal
Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal

Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal


Cast Iron Stainless Steel Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal


Sipery 5Pcs M35 Cobalt Drill Bits 8mm HSS Twist Drill Bit Jobber with Straight Round Shank for Drilling Hard Metal, Stainless Steel, Cast Iron - -,