The 5 Pc. Npt Thread Forming Taps, Pipe Taps Set, High-Speed Steel, And 3/4" Includes teach size of: 1/8" - 27 npt, 1/4" - 18 npt, 3/8" - 18 npt, 1/2" - 14 npt, 3/4" - 14 npt Product Features Different from the traditional carbon steel material. Our pipe taps is made of composite steel (GCR15) material, which is more durable and Higher hardness, (The traditional hardness of 45# carbon steel is 44; the hardness of combined steel is 61), uses forclean and or re-thread damaged or jam pipe threads. 5 pcs NPT Pipe taps used for clean and or re-thread damaged or jam pipe threads, Cuts internal threads in pipes. Ideal for pipe fittings.Available in National Pipe Taper (NPT) and British Standard Pipe Taper (BSP). Includes teach size of: 1/8" - 27 npt, 1/4" - 18 npt, 3/8" - 18 npt, 1/2" - 14 npt, 3/4" - 14 npt. Nominal size of the tap is that of the pipe fitting being tapped. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. Round shank with square end, Straight flute tools allow chips to collect in the flutes as they cut and are well suited for most applications in shallow cuts. 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!