Selby's Heavy-Duty Locking Lid Supports are perfect for bars, pianos and display cabinets. These quiet action locking lift-up supports have patented spring operated friction discs that prevent slamming when lowered. Up-action provides friction free motion to any stopping position. Down-movement provides slow and controlled motion after release. These supports are sold in pairs, left- and right-handed. They are constructed of steel with a bronze plated finish.