*20pcs Metal Self Tapping Slotted Screw Thread Insert Helical Repair M4 X 8mm

Feature: \n 1. These self tapping thread inserts can be installed directly and do not need you to tap a thread first\n2. They are used in low strength materials such as aluminum, magnesium, can avoid thread damage and get a good connection performance, to enhance connection strength and improve connection condition\n3. Used for parts that requires frequent removing, it can greatly improve service life and wear-resistance of screw thread\n4. It can prevent screw from getting loose, especially used for products requiring high coefficient of insurance\n5. Easy to maintenance, install a thread insert into a damage screw hole, then the screw hole can be used as normal, in order to avoid workpiece loss \n\nSpecification: \nFeatures:\n\n--\n\nThese self tapping thread inserts can be installed directly and do not need you to tap a thread first. \n\n--\n\nThey are used in low strength materials such as aluminum, magnesium, can avoid thread damage and get a good connection performance, to enha: