The image shows a pack of 28 countersunk drill tail screws.

The screws are size 0.8 inches (4.2x19mm).

These types of screws are designed for creating a flush finish in materials like wood, as the countersunk head allows them to sit level with the surface. 

The drill tail tip helps to start the screw without pre-drilling a pilot hole, making them efficient for various construction and woodworking projects.