ITEM NAME:8pcs Circular Die Set M3 M4 M5 M6 M8 M10 M12 with 1 Wrench Hss Tap Die Product Description Description: Features: Thread processing tool for processing or correction of external threads. The die is equivalent to a nut with high hardness, and several chip holes are made around the screw hole. The die can be installed in the die wrench with manual thread, can also be used in the machine tool. The thread precision of the die is low, but it is widely used in single piece, small batch production and repair, because of its simple structure and convenient use. Specifications: Material: metal Weight: 279g 7pcs screw die: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8 x 1.25, M10 x 1.5, M12 x 1.75, 1pc wrench: M3-M12 Included: 1 x Wrench 7 x Screw Die.7pcs screw die: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8 x 1.25, M10 x 1.5, M12 x 1.75. The die can be installed in the die wrench with manual thread, can also be used in the machine tool. The thread precision of the die is low, but it is widely used in single piece, small batch production and repair, because of its simple structure and convenient use.