thread repair kit has sufficient insert quantity to meet your mutiple needs. Easy to Maintain: Thread repair kit is easy to maintain. Install the threaded insert into the damaged screw hole, and you can use screw hole normally. You can also add glue for reinforcement to avoid kit workpiece loss Stainless Steel: Metric kit is made of stainless steel, which is sturdy and practical, not easy to deform. Coiled wire helical screw thread inserts kit can provide firm connection, but also meets your long term use needs Practical Tools: insert tool has elasticity, can evenly bear the load, reduce deviation between screw and screw hole, and stainless steel thread repair kit can also absorb vibration, thereby increasing connection strength Widely Applicable: Stainless steel coiled wire helical screw thread inserts kit can be used for low-strength materials such as aluminum, and for parts that need to be frequently disassembled to avoid damage and extend service life Steel thread inserts can effectively improve screw connection, greatly improving the reliability. Used in all kinds of low strength materials, thread inserts can largely improve the wear performance of screw connection, and avoid thread damage. Steel thread inserts used in low strength materials such as aluminum, , 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- of screw thread. Because of a certain elasticity, thread insert can even the load distribution on each thread, pitch and tooth deviation between screw and screw hole, and absorb vibration, thus increasing the screw thread connection strength and fatigue . It can prevent screw from 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. Size: (inner diameter) x 2D(installed length=2 x 4mm=8mm) Quantity: 50pcs Weight: 89g(.) Note:Please note that the main part of this product be sent randomly, please make sure you don't mind before ordering. Color: As Shown Material: Stainless Steel Package Contents: 50 * threaded inserts 1 * installation tool 1 * special faucet 1 * handle 1 * drill bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.