Very Good Price and Quality ! PRODUCT FEATURES: 100% brand new and high-quality Back tapered beyond tap to prevent thread damage from over-drilling Deburr also provided on bit beyond back taper Great for opening, tapping, and chamfering NOTICE: It's highly recommended that the combination drill and tap bit is used on a tapping machine. If you apply an electric hand drilling machine to do the tapping job, please pay attention to your operating, because excessive shaking and tilting may affect the result and even break the bit. PRODUCT SPECIFICATIONS: Type: Screw tap Material: High-speed steel 4341 Shank: 1/4 Quick change hex Metric: M3/M4/M5/M8/M6/M10 Style: Spiral Tap We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right. We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. Remember: Shipping usually takes 2-3 weeks read our Shipping for more details!