Description: 40 Pcs Professional SAE Tap and Die Set. Taps and dies are cutting tools used to create screw threads. A tap cuts a thread on the inside surface of a hole, creating a female surface which functions like a nut. The die cuts a thread on a preformed cylindrical rod, which creates a male threaded piece which functions like a bolt. Both tools can be used to clean up a thread, which is called chasing. Features: 40 Pcs Professional SAE Tap and Die Set with Tap Wrench and T-Handle Wrench Taps & Hexagon Die With Thread-Pitch range from 4-40 to 1/2"-20 Includes Both Fine & Coarse Threaded Taps & Dies in Imperial Sizing Professional Grade Set in Special Fine Carbon Steel For Excellent Strength Includes: Adjustable & T-Handle Tap Wrenches, Adjustable Die Wrench Specifications: Condition: Brand New Material: Stainless Steel Measurement System: SAE/Imperial Thread Type: NC, NF, NPT Taps and Dies Size: M3X0.5, M3X0.6, M4X0.7, M4X0.75, M5X0.8, M5X0.9, M6X0.75, M6X1.0, M7X0.75, M7X1.0, M8X1.0, M8X1.25, M10X1. 25, M10X1.5, M12X1.5, M12X1.75 Storage Box Size: 293x183x30mm/11.54x7.2x1.18" Quantity: 40 Pcs/1 Set Note: Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Content: 1 x Adjustable Tap Wrench (1/8" NPT-27) 1 x T-Handle Wrench 1 x Die Handle 1 x Screwdriver 1 x Screw Pitch Gauge 34 x Taps and Dies 1 x Storage for Case