The Zip-It anchor is a one-piece self drilling anchor designed for use in gypsum wallboard for light to medium duty loads. It is available in both engineered nylon and Zamac alloy designed for use with No. 8 screws in 3/8" to 1" thick wallboard. The Zip-It Jr. is also available in engineered nylon and Zamac alloy designed for use with No. 6 screws in 3/8" to 5/8" wallboard. These fasteners are not recommended for use overhead or applications where holding values are critical.