The Hillman Group 42182 Pro Crafter 10 by 2-1/2-Inch Wood Screw, 40-Piece The product is 40PK 10x2.5 WD Screw Easy and simple use kit The product is manufactured in China Flat head with countersinking nibs allows the screw to drive clean and flush to the surface Square drive for a confident stick fit while driving Zinc and yellow finish Secondary serrations reduces drive torque for easy installations Type 17 cut point helps prvent wood splitting and allows for quick penetration