50Pcs Inner Thread Self Tapping Thread Inserts Set Thread M3-M12
Internal and external thread nut is also called internal and external thread screw sleeve, thread repair sleeve, reducing nut, which is a new type of fastener to enhance thread strength. Embedded in soft materials such as plastic, aluminum alloy, copper, bakelite, etc., it can form higher internal threaded holes, repair damaged internal threaded holes, and convert between threads.