All the common and hard to find inch and metric taps and dies you'll ever need makes this the perfect kit for the home garage or professional.Includes SAE, USS and metric coarse and fine thread taps and diesIncludes tapered taps, plug taps and diesMetric size dies and taps 6mm-18mmUNC (USS) inch dies and taps #4-3/4 inchUNF (SAE) inch dies and taps #10-3/4 inchHard to find 1/4-24 and 1/4-32 dies and taps1/8 inch NPT pipe thread tap and die1/4 inch NPT pipe thread tap3 tap wrenches2 die handlesPitch gaugeTap drill size chartBlow molded caseHigh quality 9Crsi steel with 58-62 hardness ratingCompares to the quality of Irwin without the priceBlow molded plastic caseRunning around looking for an uncommon thread size tap or die in the middle of a project is a real hassle. This set has all the usual taper and bottoming taps, and matching dies, plus many hard to find sizes. You'll save money too, compared to the price you pay for each piece if you were to buy them individually at your local retailer. This set comes with 9 taper taps, bottoming taps and dies in metric sizes from 6mm to 18mm, 13 course thread (USS) inch size taper taps, bottoming taps and dies from #4 to 3/4 inch, 6 fine thread (SAE) inch size taper taps, bottoming taps and dies from #10 to 3/4 inch, taper and bottoming taps and dies in the hard to find 1/4-24 and 1/4-32 sizes, 1/8 inch pipe thread (NPT) tap and die, and handles.SpecificationsHigh quality 9Crsi SteelHardness rating 58-62 HRCSAE and Metric Course and Fine Thread Sizes IncludedAll needed Tap and Die Wrenches includedWarranty1 YearSafety InformationPlease wear proper personal protection