6Pcs Drill Tap Combination Bit Set (1/8''-3/8'') With 1/4" Hex Shank, Hss 4341 ?NOTE? 1, Not suitable for Hard Metal! 2, Recommended for use on tapping machines to prevent swaying and tilting 3, Pay attention to the operation method when using the hand drill. Excessive sloshing and tilting will affect tapping and even break the tap Product Specifications [Type] Drill Tap Combination Bit Set [Material] High Quality High Speed Steel (HSS 4341) [Measurement System] Inch [Shank] Quick Change 1/4" Hex Shank (6.35mm) [Size] 6 Size 1/8"(3.175mm) 5/32" (3.97mm) 3/16" (4.76mm) 1/4" (6.35mm) 5/16" (7.94mm) 3/8" (9.53mm) Features 1, Made of high quality HSS 4341 for high hardness, rustproof, solid and durability 2, Back tapered beyond tap to prevent thread damage from over-drilling 3, Self-Centering point, do not need assistant center drilling or center punching 4, Greatly save processing steps and time costs, improve working efficiency in hole drilling, tapping, deburring and countersinking 5, Suitable for Low Hardness Materials Such as wood, plastic, aluminum plate, iron and other soft metal (thickness of less than 3mm) Packaging Includes 6pcs * Drill Tap Combination Bit (1/8''-3/8'') Product Features ?Imperial Inch Size? 6 sizes in one drill tap combination bit set to meet your diverse requirements with quick change 1/4" hex shank (1/8", 5/32", 3/16", 1/4", 5/16", 3/8") ?High Speed Steel Material? Made of high quality HSS 4341 for high hardness, rustproof, solid and durability. Back tapered beyond tap to prevent thread damage from over-drilling ?Save Time? Complete hole drilling, tapping, deburring and countersinking in one operation and greatly save processing steps and time costs, improve working efficiency ?Self-centering Point? Countersink tap and thread set are recommended for use on tapping machine, which provides better stability against swaying and tilting! ?Notice? Not suitable for Hard Metal! Suitable for fast drilling, tapping machining, cutting on Low Hardness Materials Such as wood, plastic, aluminum plate, iron and other soft metal (thickness of less than 3mm) 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!