Materials: cold rolled plate and electronic-zinc plate Finish: black zinc, electronic-plated, color chromate, black. Features: full extended, self-leading back Applications; TV cabinets, office drawers, cabinet oven, stereo system cabinets, kitchen cabinets, refrigerators, vending machine drawers, file cabinets, business equipment, etc.I¡¢FX3045 3-fold damping ball bearing slides (soft closing slides)