M35 Cobalt Step Drill Bit Set, 4 Flute Step Bit (1/8″-7/8″) Wear-Resistant Tialn Coated, 1/4 Hex Shank Unibit for Metal, Wood, Stainless Steel, Plastic (3Pcs, 20 Size). FOUR FLUTE STEP DRILL BIT – Ordinary step drills are prone to deflection during cutting, but four Flute step drill are more stable in cutting. The service life is twice as long as that of ordinary step drills, the drilling accuracy is significantly improved, and the cutting speed is faster when drilling, which has a unique effect on stainless steel drilling. M35 COBALT HSS – M35 cobalt HSS can obtain high hardness (HRC 64-66), high red hardness and high wear resistance through proper heat treatment. Its toughness and bending strength are higher than ordinary high-speed steel, and it is better for hard materials. TiAlN COATING – As a new coating material in the past two years, TiAlN coating has excellent characteristics such as high hardness, high oxidation temperature, good thermal hardness, strong adhesion, small friction coefficient, and low thermal conductivity. 135°CUTTING ANGLE – The increased angle of the drill tip is more suitable for drilling hard materials than 118°. The larger the included angle, the smaller the self-wear and the larger the stress area. TIPS – Due to high-speed rotation, the temperature of the drill bit will continue to rise. It is recommended to add cutting oil or spray water to cool down when working continuously, which can effectively improve the service life of the step drill bit. What can MATEWORK do for you? I used to be a repairman, I searched everywhere for a high quality tool to help me get the job done, unfortunately I couldn’t find it, this has always been my regret, so I founded MATEWORK, I strictly demand that our products must be of high quality High quality and built to last, help as many people as possible get work done with MATEWORK. 1/8″-1/2″ (13 step size) : 1/8″, 3/32″, 3/16″, 7/32″, 1/4″, 9/32″, 5/16″, 11/32″, 3/8″, 13/32″, 7/16″, 15/32″, 1/2. 1/4″-3/4″ (9 step size) : 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4. 3/16″-7/8″ (12 step size) : 3/16″, 1/4″, 5/16″, 3/18″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″, 13/16″, 7/8″. 1/4″-1-3/8″ Popular Size :7/8″, 1-1/8″, 1-3/8. We strictly control every process of step drill bit production, and fully inspect them before sending them to Amazon warehouse. Titanium Aluminum Nitride Coating(TiAlN). High Speed Steel, Cobalt. 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 “chhaiba-accessories” and is located in this country: US. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South Africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi Arabia, United Arab Emirates, Qatar, Kuwait, Bahrain, Republic of Croatia, Malaysia, Brazil, Chile, Colombia, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Ecuador, Egypt, French Guiana, Guernsey, Gibraltar, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Maldives, Oman, Peru, Pakistan, Paraguay, Reunion, Vietnam.

• Material: High Speed Steel, Cobalt
• Shank Type: Hex
• Size: 1/8\
• Finish Type: Titanium Aluminum Nitride
• Tool Flute Type: Spiral
• UPC: 7445047026058
• EAN: 07445047026058