Material: SUS304 stainless steel, The combination of element forms a layer of dense oxidation covering film on the material surface, which is wear-resistant, rust-proof and anticorrosive.
Hex Socket: Inner hexagon, uniform force, not easy to skid, inside and outside are smooth and complete without burr.
Thread: Screw thread has the function of fastening, the spiral section is smooth, no residual, no burr, the thread is neat and clear.
Configuration: The stainless steel inner hexagonal bead screw (also called the marble machine, the ball plunger, the positioning bead screw) is a plunger-shaped assembly which is pressed by the spring, the bead and the shell through the interference fit.