Simpson Strong-Tie® Quik Drive auto-feed screw driving systems turn repetitive fastening into opportunities to increase efficiency and save time. Extensive research goes into the design of each system and screw to understand the intended applications, fastener performance demands and the workflow in which installations take place. This results in professional-quality auto-feed solutions that truly make work easier. This attachment is ideal for fastening cement board and fiber-cement board underlayment/backboard to wood or steel. Quik Drive® PROLDHG2 Underlayment/Backerboard Attachment (Pack of 100).