53mm三节侧装全展重型钢珠滑轨 BS53A Heavy Duty Full Extension Slide Applications: Utility and industrial truck bodies, industrial work stations, heavy duty machine tools and mechanical devices. Features: Non-disconnect. Finish: Bright electro-zinc plating. Length: 10'-40 ' Height: 53mm Sidespace: 19.1+0.7mm Load rating: 250lbs/pair Material: Work hardened cold rolled steel.