Century Drill Tool 98902 National Coarse Fractional Tap and Die Set, 14-Piece, steel Precision Cut Threads, Accurately Formed For Consistent, Exact Threading. Heat Treated And Tempered For File Hard Threads, And Longer, Useful Life. Designed For Hand Cutting Applications. For Use With Tap Wrenches To Cut Internal Threads. 75% Thread Engagement. Plug Style Is The Most Commonly Used Style Of Tap -3 To 5 Threads Chamfered. Features Heat treated and tempered for file hard threads, and longer, useful life Designed for hand cutting applications Plug style tap is the most commonly used style of tap - 3 to 5 threads chamfered at tip Set includes: Tap Wrench, 1" Die Stock, 1/4-20 NC, 5/16-18 NC, 13/8-16 NC, 7/16-14 NC, 1/2-13 NC, 1/8-27 NPT Taps And 1/4-20 NC, 5/16-18 NC, 3/8-16 NC, 7/16-14 NC, 1/2-13 NC, 1/8-27 NPT Dies USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.