FORMUFIT 1/2 in. PVC Internal Dome Caps in Gray fit inside a Schedule 40 PVC pipe, leaving a smooth, domed end. An exceptional solution to make a gentle finish for open ends of PVC pipe. All FORMUFIT PVC inner dome caps have a smooth domed shape on the top, providing a clean, flush end to PVC pipe. Their balanced and simple appearance gives projects and applications a smooth and professional look.