Acorn International No. 14 Sizes X 3-1/4 in. L Star Flat Head Sheet Metal Screws 250 pk

The star drive flat head reduces camoutandend load, handles greater torque than Phillips or square drive, and eliminates spinning and fastener damage. For star drive use a T30 drill bit (not included). Reamer wings drill through wood and snap off when they encounter metal. Shank slot holds steel shavings and improves drilling action. Ideal for trailer beds and walls.