The Zip-It® anchor is a one piece self-drilling anchor designed for use in hollow gypsum wallboard for light to medium duty loads. It is available in both engineered nylon and Zamac alloy for use with NO 8 screws in 3/8 to 1 in thick wallboard. The Zip-It Jr. is also available in engineered nylon and Zamac alloy for use with NO 6 screws in 3/8 to 5/8 in wallboard.