This ball catch is constructed of diecast and steel components. The drive-in ball catch features a 3/4 in. x 1-3/16 in. barrel with a steel ball, spring and strike plate. This ball catch is designed to provide a spring-loaded latching system where a standard door knob latch bolt is not required and/or desired. These drive-in ball catch latch devices remain concealed from view once installed, and they're generally used on a pair of swinging double doors with dummy knob hardware. null -