1、The screw sleeve are made of stainless steel, good corrosion resistance. 2、Used in various low strength materials, which can improve the wear resistance of bolt connections and avoid the damage of thread 3、All the screw sleeve are placed in a box for easy carrying. 4、Application in low-strength engineering materials such as aluminum alloy, magnesium alloy, copper plastic, electrician, etc. can improve thread strength and wear resistance. 5、With the product,the threaded hole can be repaired economically and effectively. Features: The screw sleeve are made of stainless steel, good corrosion resistance. Used in various low strength materials, which can improve the wear resistance of bolt connections and avoid the damage of thread All the screw sleeve are placed in a box for easy carrying. Application in low-strength engineering materials such as aluminum alloy, magnesium alloy, copper plastic, electrician, etc. can improve thread strength and wear resistance. With the product,the threaded hole can be repaired economically and effectively Specification: Material:steel Type(optional): #1 #2 #3 #4 #5 M2*0.4*1D 20PCS M2*0.4*1.5D 20PCS M2*0.4*2D 20PCS M2*0.4*2.5D 20PCS M2*0.4*3D 20PCS M2.5*0.45 *1D 20PCS M2.5*0.45*1.5D 20PCS M2*0.45*2D 20PCS M2*0.45*2.5D 20PCS M2*0.45*3D 20PCS M3*0.5 *1D 20PCS M3*0.5*1.5D 20PCS M3*0.5*2D 20PCS M3*0.5*2.5D 20PCS M3*0.5*3D 20PCS M4*0.7 *1D 20PCS M4*0.7*1.5D 20PCS M4*0.7*2D 20PCS M4*0.7*2.5D 20PCS M4*0.7*3D 20PCS M5*0.8 *1D 20PCS M5*0.8*1.5D 20PCS M5*0.8*2D 20PCS M5*0.8*2.5D 20PCS M5*0.8*3D 20PCS Package List: 100*Screw Sleeve Introduction and application: Steel wire screw sleeve is a new type of internal thread fastener made of high strength steel wire with diamond cross section. It can be used in low strength engineering materials such as aluminum alloy, magnesium alloy, copper, plastic, electrician and so on to improve the strength of thread and wear resistance. Application:1. The steel wire screw sleeve can be assembled into the hole of aluminum alloy and other materials to form the high-strength wear-resistant high-precision standard internal thread.Typical applications in high-voltage switching equipment, microwave communications, automotive components, aerospace precision parts, electronic products, air equipment Application 2: In case of screw thread error or damaged internal thread repair, the use of steel wire screw sleeve as a means of repair can be economical and effective to repair the thread hole