FastenMaster Cortex 2.5 in. L Slate Gray Torx TTAP Hidden Deck FastenerThe Cortex Hidden Fastening System is the fastest, easiest way to hide the heads of your deck screws on market leading deck board types. Set the screw, set the plug, and are all set. Cortex offers a strong connection between the deck board and the joist a UPC: 683531031653 Manufacturer Part No: CTX100SFSG Brand Name: FastenMaster Sub Brand: Cortex Drive Style: Torx TTAP Product Type: Hidden Deck Fastener Self Tapping: Yes Packaging Type: Boxed Thread