Specification Brand : HOHXEN BulletPoint1 : Cobalt high speed steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come. BulletPoint2 : Hex Shank Diameter: 6.35mm / 1/4 ". No need center punch, compared with the ordinary twist drill, it is not easy to be break down and it can be used for deburring, chamfering and opening hole. BulletPoint3 : High-speed steel co M35 step drill, higher quality and more durable than HSS 4241 step drill Punch Effective as a great cobalt drill bit. Made of super strong HSS steel for added durability and bit life. BulletPoint4 : Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. (the board must be smaller in thickness than the height of step drill bits) BulletPoint5 : Standard SAE step drill bits with a two-flute design for faster, smoother cutting Suitable for drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal. CuttingAngleString : 135 degrees ExternallyAssignedProductIdentifier : 6345319844797 ExternallyAssignedProductIdentifier1 : 4002395366972 ExternallyAssignedProductIdentifier2 : 04002395366972 FinishType : Titanium FinishType1 : Bronze FinishType2 : Aluminium GpsrSafetyAttestation : 1 ItemName : HOHXEN 4-32mm Triangle 1/4" Hex Shank 15 Sizes M35 Cobalt Coated Step Drill Bit Metal Hole Cutter ItemPackageDimensions_Height : 10 centimeters ItemPackageDimensions_Length : 12 centimeters ItemPackageDimensions_Width : 4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : step-drill-bits Manufacturer : HOHXEN Material : metal ModelNumber : WJ-5324 PackageLevel : unit PartNumber : WJ-5324 ProductDescription : Specification: Material: High-speed Steel,Co (HSS co M35) Surface Treatment: Titanium Coated Dimension: 4-32mm(4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm); 15 steps Hex Shank Diameter: 6.35mm / 1/4 "
Features: Titanium coated to reduce mit and heat. High-speed steel co M35 step drill, higher quality and more durable than HSS 4241 step drill. Punch Effective as a great cobalt drill bit. Very useful for drilling and above all inflated holes in stainless steel, metals, plastics and wood. Suitable for punch holes through sheet metal, steel plate, aluminum plate, brass or wood. Highly recommended tool to have in the workshop.
About Trepanning for Stainless Steel Sheet: 1. Hand drill and bench drill can be used when trepanning for stainless steel sheet, the hand drill drill steel sheet within 1mm and the bench drill can drill 2-3mm steel sheet. 2. It is necessary to drill with low speed when trepanning for stainless steel sheet, hundreds of rpm is ok. 3. It's better to use water injection or cutting fluid coolant for cooling when drilling, which can extend prolong the using life of drill bit.
Note: -At the trepanning,please wear good protective measures,in case of wood chips splash damage eyes. -Size for manual measurement, there may be a 0 to 5 mm error, belongs to the normal phenomenon. -The cutter is sharp enough,please get away from children. -Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!!