M4 x 8mm Helical Thread Inserts, 20pcs Metal Self-Tapping Screw Repair Kit

1 These self tapping thread inserts can be installed directly and do not need you to tap a thread first 2 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 3 Used for parts that requires frequent removing, it can greatly improve service life and wear-resistance of screw thread 4 It can prevent screw from getting loose, especially used for products requiring high coefficient of insurance 5 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

What's in the box
1 x 20pcs Metal Self Tapping Slotted Screw Thread Insert Helical Repair M4 x 8mm Set