110pcs m6-m8/1d-3d coiled wire thread insert stainless steel thread screws sleeve set

the screw sleeve is made of stainless steel, good corrosion resistance. 8 different sizes of screw sleeve meet your different needs. used in various low strength materials, which can improve the wear resistance of bolt connections and avoid the damage of thread. all the screw sleeves are placed in a box for easy carrying. strengthen the connection strength and improve the connection condition, avoid sliding wire, wrong tooth phenomenon, and obtain excellent connection performance..syi