GRK Fasteners R4 Framing and Decking Screw, Thread Size: #10, 3-1/8 in L, Head Type: Round, Drive Type: Star, Steel, Package Quantity: 1500 BX, Multi-Purpose, Thread Length: 2.087 in, Drive Size: T-25, Applicable Materials: Cement, Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood