Pack Your $50 Order with Free Global Shipping
Delivery & Return:Free shipping on all orders over $50
Estimated Delivery:7-15 days international
People:15 people viewing this product right now!
Easy Returns:Enjoy hassle-free returns within 30 days!
Payment:Secure checkout
SKU:75947219
Specification: Material: High speeds steel 4241 Weight: 553g/19.5oz Model: 3/16-7/8, 1/4-1-3/8, 1/8-1/2, 1/4-3/4, 3/16-1/2 Package List: 5 x Step Drill Bit 1 x Connection Rod Note: Water must be injected to cool the steel plate, otherwise the drill will be scrapped easily. Features: Made of decent high-speeds steel, high strength, long service life. Unique step construction for good deburrig, chamfering, opening round hole. Fast speeds, small shaking, can open a beautiful aperture out. While working, water injection cooling can effectively extend the service life of the drill bit, the recommended drilling speeds is 250-400 RPM. Suitable for use in hardness under 25° artifacts, such as iron plate, aluminum plate, PV board, insulation board.
MADE OF DECENT HIGH-SPEEDS STEEL: high strength, long service life.high speeds steel along with the black coating ensures extreme durability, will stay new and shiny for years to come.
UNIQUE STEP CONSTRUCTION FOR GOOD DEBURRIGK: chamfering, opening round hole.Dual-flute design provides greater speeds and control and optimized for cordless drills driver running at high speeds
FAST SPEEDS, SMALL SHAKING, CAN OPEN A BEAUTIFUL APERTURE OUT: Step drill bit can be used on electrical drill, cordless drill, or high impact drill press machine, combo set with durable ABS plastic organizer for easy and safe storage in your tool box.
SUITABLE FOR USE IN HARDNESS UNDER 25° ARTIFACTS:such as iron plate, aluminum plate, PV board, insulation board.
RECOMMENDED DRILLING SPEEDS IS 250-400 RPM:While working, water injection cooling can effectively extend the service life of the drill bit, the recommended drilling speeds is 250-400 RPM.
