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 either a No. 6 or No. 8 screws in 3/8" to 1" wallboard. The Zip-It Jr. is formed from engineered nylon for use with No. 6 screws in 3/8" to 5/8" wallboard.