FastenMaster Cortex 2-1/2 in. L Gravel Path Torx Ttap Star Head Deck Screws and Plugs Kit 1 pkThe innovative Cortex hidden fastening system for Trex decking hides the heads of deck screws with color matched plugs. Cortex hidden fasteners feature a thread design that requires less torque and a bit designed for extreme pro contractor use. The Ttap h UPC: 608309429456 Manufacturer Part No: FMCTX TX300TSGP Brand Name: FastenMaster Sub Brand: Cortex Length: 2 1 2 in. Head Type: Star Head Self Tapping: Yes Packaging Type: Bucket Thread Type: Coarse