Deckfast Fascia Tool - -. Pre-drills and Countersinks to the Correct Depth Every Time . Independently Spun Stop Collars To Prevent Damage or Markings on the Fascia . Creates an Oversized Hole for the Deckfast Fascia Screw to Allow for Expansion and Contraction . Designed for PVC and composite deck fascia boards from 1/2 to 3/4 of an inch thick . FOR USE WITH DECKFAST FASCIA SCREWS (SOLD SEPARATELY) . The Deckfast Fascia Tool was created to be used with Deckfast Fascia System Screws. The No Cam-Out Auto-Stop mechanism prevents screw recess stripping. There is also an anti clog debris cavity .to gather all waste material and keep it away from the countersink. The Spinning Stop Collar protects the fascia surface while the rubber O-ring prevents damage to the work surface once the target depth is reached. Fascia System allows for the expansion and contraction of fascia boards. The system is approved to be used with ACQ treated lumber. . . .