【Premium Material】 This set of set screws is made of excellent 304 stainless steel, which boasts superior resistance to rust, oxidation, and corrosion. It is not easily broken or slipped, ensuring a long service life. 【Easy to Use】 These machine screws offer uniform force, no misalignment, and are not easy to slip. With a uniform slope, no sharp edges, a clear screw thread, and no residual burrs, the threads of the set screws can grip well. 【Easy to Carry】 All the socket head cap screws are stored in a transparent storage box. These socket head cap screws are properly sorted and located in the transparent sorting box, which is clear and easy to carry at a glance. 【Wide Applications】 These hex head bolts are suitable for door handles, faucets, lights, knobs, armor repairs, plumbing, and other small repairs in shops, garages, households, precision machinery, classified instruments, electronic products, household appliances, and communication products. 【What You Get】 M3 * 3mm; M3 * 4mm;