Additional Details ------------------------------ Bullet point: Brand Name: FastenMaster Sub Brand: Cortex Length: 2-3/4 in. Drive Style: Torx TTAP Head Type: Star Head Finish: Rope Swing Material: Stainless Steel Product Type: Hidden Deck Fastener Container Size: 224 per box Packaging Type: Boxed Self Tapping: Yes Thread Type: Coarse Coverage 100 linear foot* Cortex for trex hidden fastening system is the fastest, easiest way to hide the heads of your deck screws on the market* Cortex offers a strong