PATIKIL Compression Spring, 0.5mm Wire Dia x 4mm OD x 10mm L, 10 Pcs 304 Stai…
Material: 304 Stainless Steel. Constructed of durable spring steel (tempered steel wire) to provide optimum expansion when compressed, with high elasticity, smooth surface, and corrosion and rust ability, it can provide a durable, reusable, and long service life.