Quick Drive Strong-Drive #9 x 2 In. T-25 WSV Subfloor Collated Wood Screw, Yellow Zinc Finish(2000-Ct.)Redesigned tip and thread pattern provides easy starts and up to 25% less torque while driving makes for up to 20% faster driving Less installation torque also means less wear on tools Deep 6 lobed recessed ribbed head provides clean countersinking and more secure bit retention for fewer cam outs The holding power of WSV screws reduces the gaps between the joist and subfloor that cause floor squeaks WSV screws can be easily backed out, allowing for