Step Drill Bit Dark Yellow Spiral Stepped Drills Bits for Professionals Feature:1. Unique 3 Sided Shank: Compared with traditional drills, spiral step drills are nearly impossible to buckle. The unique 3 sided shank prevents slipping into the drill chuck and reduces impact, which is recommended to lubricate the drill before each use to extend service life.2. Design Optimization: The spiral step drill bit slot design and the 3 side shank design are optimized for high speed cordless drilling rigs, providing greater speed and control, while minimizing the flying of steel plates, thereby prolonging the service life.3. 10 Size Drill Bits: The spiral step drill bit has 10 sizes, so you can drill 10 holes according to different diameters, which saves you the time and effort to replace the drill bit.4. Drilling Depth: The drilling depth can be as high as 0.07in (about 0.2 cm) of steel plate, acrylic, PVC, and wooden boards within 0.2in (about 0.5 cm).5. Robust High Speed Steel Structure: The spiral step drill bit with strong high speed steel structure is adopted to improve durability. The new spiral slot design cuts faster and straighter, and can automatically deburr when you drill. Specification:Item Type: SpiralStepDrillBitMaterial: High Speed SteelPurpose: Spiral Step Drill BitColour: Dark YellowTool Handle Size: 3/8inDrilling Range: 1/4in-1-3/8inStep Size: 1/4in, 3/8in, 1/2in, 5/8in, 3/4in, 7/8in, 1in, 1-1/8in, 1-1/4in, 1-3/8inScope of Application: Use with Pistol Drill or Electric DrillPackage List:1 x Spiral Stepped Drill BitNote:Please do not set the drilling speed to the maximum value to avoid damaging the cutting edge. 1) We accept Alipay, West Union, TT. All major credit cards are accepted through secure payment processor ESCROW. 2) Payment must be made within 3 days of order. 3) If you can't checkout immediately after auction close, please wait for a few minutes and retry Payments must be completed within 3 days. About shipping 1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO) 2. Orders processedtimely after thepayment verification. 3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address. 4. The images shown are not the actual item and are for your reference only. 5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season. 6. If you have not received your shipment within the period, please us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer ! 7. Due to stock status and time differences, we will choose to ship your item from our first available warehouse for fast delivery. 8. We seller are not in charge of import duty, buyer is responsible for that. Any dispute caused by this is unreasonable. 9. BR buyer please provide the cpf or cnpj, it will be better for you to get it more quickly. thanks Return and Refund 1. You have 7 days to us and 30 days to return it from the date it was received. If this item is in your possession more than 7 days, it is considered used and WE WILL NOT ISSUE YOU A REFUND OR REPLACEMENT. There are NO EXCEPTIONS! Shipping cost is bear by both seller and buyer in half. 2. All returned it