Simpson Strong-Tie's #9 x 2 in. Quik Drive Collated Subfloor Screws features a ribbed flat head that allows for clean countersinking, helping to prevent material damage or surface splitting during installation. The sharp point and aggressive thread pattern ensure smooth penetration and strong holding power in wood substrates. Ideal for residential, commercial, and light industrial construction, these collated screws offer a dependable fastening solution for contractors and professionals who need consistent performance across high-volume jobs. The collated strip format also minimizes handling and reload time, increasing overall jobsite efficiency.