Meichoon Step Drill Bit 4-20Mm Hss M35 Co Spiral Groove Hex Shank, Meichoon M35 Step Drill Bit is made of high speed steel together with cobalt, which lasts the bit a long using life. Features: 1. M35 High speed steel for longer service life; 2. Hex shank prevents slip in drill chuck; 3. Double cutting blades design enables a faster and smoother cutting; 4. The advanced double spiral flute design outperforms straight flute design and extends the life of the bit. The split point tip increases speed, and they also include laser-engraved measurements to increase step visibility. 5. The sharpness ensure easily cut through most sheet metal, plastic and some other materials with ease, especially for stainless steel plate quenching steel plate. Specifications: Material: M35 HSS Sizes of the Step Drill Bits: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm Package included: 1 x M35 HSS Drill Bit Product Features M35 High Speed Steel - classic high speed steel with cobalt for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal. Good Design - Hex Shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily. A necessity for family or handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal, especially for stainless steel plate quenching steel plate. Split point tip increases speed. It can automatically deburr holes while drilling to keep the drill bit clean. You can use water to cooling it when it is work and it can be used for even longer. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!