【60pcs Titanium Coated Tap and Die】: Set includes 54 taps & dies, 1 die handle, 1 T-tap wrench, 2 screw-pitch Gauge, 1 screwdriver, 1 tap wrench. Constructed by quality GCr15 bearing steel with titanium coating that ensures higher durability in threading..【Common Sizes in Metric & SAE】: 10MM Dies&Taps: 3x0.5,4x0.7,5x0.8,6x1.0,7x1.0,8x1.25,9x1.25,10x1.5,10x1.0,12x1.75; 10UNC Dies&Taps: 4-40,6-32,8-32,10-24,12-24,1/4,5/16,3/8,7/16,1/2;6UNF Dies&Taps: 10-32,1/4,5/16,3/8,7/16,1/12; 1NPT Dies&Taps: 1/8-27..【Performance and Durability】: CNC machined Tap and Dies made by industry-grade GCr15 bearing steel with pronounced hardness and balanced ductility. Titanium coating on the finish ensures higher durability on hard metal..【Easy for Storage】: Comes with a heavy-duty storage case, convinient for storage and carrying. It has identified slot for each piece so that to keep neat and easy finding..【Versatile Threading Tool Set】：This MASTER set is perfect for cutting and renewing external and internal threads to exact standards. Durable to process on hard metal such as alloy, steel and brass, for all-day performance in the shop or home project.