Features: These self tapping thread inserts can be installed directly and do not need you to tap a thread first. 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. Used for parts that requires frequent removing, it can greatly improve service life and wear-resistance of screw thread. It can prevent screw from getting loose, especially used for products requiring high coefficient of insurance. 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. Specifications: Material: Stainless steel Quantity & Size: 10PCS M3*0.5-M5*0.6 L4 10PCS M4*0.7-M6.5*0.8 L6 10PCS M5*0.8-M8*1.0 L7 10PCS M6*1.0-M10*1.25 L8 10PCS M8*1.25-M12*1.5 L9 4PCS M10*1.5-M14*1.5 L10 4PCS M12*1.75-M16*1.75 L12 Weight: Approx.127g/4.5oz Package list: 58 * Threaded Inserts 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.