... Zn or other 4,iron material or other All art wire/ steel sheet/metal spring/spring clip or compression coil spring can ... be customized. spring roll,spring loaded in,torsion wire spring,slinky spring,gas spring arm,spring plunger,spring hose ... : polishing, zinc plating, nickel plating, chrome plating, powder coatingo stainess steel wire OEM/ODM spring clip compression coil spring