1.Metric die set: Three dies included: 1 mm-1.25 mm-1.5 mm-1.75 mm; 2 mm-2.5 mm-3.0 mm-3.5 mm; 4 mm pitch dies. 2.Material: Manufactured with high-quality steel, good resistance and durability in use, showing stable performance with economical price. 3.Design: The sawtooth shape helps to increase the friction obviously during repairing and removes the rust on the threads efficiently. 4.Convenient: Installed appropriately in the holder of thread chaser and the bolt put in right position, simply rotating to get damaged or rusty threads repaired. 5.Product Description: Three size of dies are included to better meet your demands: 1 mm-1.25 mm-1.5 mm-1.75 mm 2 mm-2.5 mm-3.0 mm-3.5 mm 4 mm pitch 6.Considerate Design: motorparts thread repair dies are designed in swatooth-shape, which effectively increase the friction when manipulating. Compared with the traditional methods to repair damaged or rusty threads, our products undoubtedly can save your time and energy a lot. 7.Easy Installation and Manipulation: motorparts thread repair dies are convenient for installation and manipulation. Appropriately install the dies in the holder of the thread chaser and twist on by hand and then twist with a wrench. 8.100% Satisfaction Guarantee: Our aims to provide best products and services for our customers. If you receive broken or defective thread repair dies, please contact us immediately, we will compensate you with 2 Years' warranty or 60 days full refund.