Prime-Line Door Knocker and Viewer, 1/2 in. Bore, 160-Degree View Angle (Single Pack)

These patio door lock pins are constructed of steel and come in a chrome-plated finish. They feature a 3/16 in. outside pin diameter and have a 2-5/8 in. long reach. Each set includes a pin holder on-chain for easy storage when not in use, and a retaining ring to add strength at the insertion point when the lock is engaged. These patio door pin locks are designed to secure the sliding door in place when in a closed or ventilating position. These lock pins include all installation fasteners and they are simple to install.