Carbon steel thread cutting tool set, used for heavy cutting, has high hardness, is not easy to rust, stable performance and long service life.Used to repair screws and tools that cannot be used because of screws. Dimensions of coarse thread taps (7 pieces) and dies (7 pieces) (mm): 6X1.00, 8X1.25, 10X1.25, 10X1.50, 12X1.25, 12X1.50 and 12X1. 75. Suitable for thread sizes to burrs and rust spots. Equipped with a tool box for storage, the groove in can protect the thread repair tool well and is easy to store. Effectively prevent loss after use, very suitable for your workbench or on the road. external or internal threads on nuts, bolts and studs can be repaired. Each one is marked with size, which can provide quick reference and easy to find. describe: Name: Thread Repair Tool Set Tap size (mm): 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5 and 3.0 size: 28 x 20 x 7 cm Material: steel colour: As shown Package Contents: 1 x Thread repair tool set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.