20Pcs Wire Thread Insert M12 x 1 Threaded Repair Reduce Nut Spiral Circle Extension Tool2.5D

1、Fit the socket set in the screw hole of the metal material workpiece to form a high?accuracy standard female thread. 2、When thread processing error occurs or female thread hole is damaged the wire thread insert is a good maintenance tool. 3、The thread socket is female thread fastener with certain elasticity which can enhance the connection strength and fatigue strength of the thread. 4、Stainless steel has good corrosion resistance and is not easy to break when repairing threaded holes. 5、Wire thread insert can be used to convert between metric and imperial threaded holes which is convenient and fast.