OWSOO 330pcs Embedded Screw Combination Copper Screw M2//M4M5 Brass Knurled Round Molded-in Insert Screw Packed in Organizer Box

Made from environmentally friendly brass, which is corrosion resistant, rust-proof, and has good thermal and electrical conductivity. 330pcs knurled nuts come in various sizes, M2//M4M5, to meet different needs. Carefully crafted, fine thread, no burrs or flash. Packed in a durable box for easy storage and to unexpected loss during use.