1.With:cabinet ,up open door Gas spring pass SGS test Passed ... Material:Steel&zinc alloy2, Type: support, furniture support, gas spring,cabinet support, furniture hardware.3, Material: Iron4, ... for 100,000 open close times.2, Products with double-eletroplated,preventing-scratches and anti-rust.3 ... your QC before delivery.7, Package: each gas spring with screws,two fittings and instruction into a polybag ...