Tool for Thread Insert Install This type of tool is ideal for installing inserts in small production runs or in areas where compressed air or electricity are not available and offers a quicker alternative to the simple hand installation tool. The tool is suitable for use when installing free running and locking inserts. Size & Type: M2-M30 for metric and from UNC2-56 to 1” Other sizes on request We have Prewinder tools, simple manual tools, hex electric tools and other type of tools.