Simpson Quik Drive QDPRO300SG2 Decking AttachmentThe Simpson QDPRO300SG2 auto feed Decking Attachment fastens subfloor to wood or steel quickly and uniformly. This Simpson Decking Attachment features a limited lifetime warranty Key Features Available alone or as part of the PRO300SG2, PROSDD and PROCCS+ systems Expanded depth settings for high density flooring materials Non skid teeth are reversible and replaceable Uniform toenailing and countersink on slick surfaces Sure grip guide tube increases