The pack contains 4 high-res (6144×4096 Pixels and 240 ppi) textures and are pre-matted on black.
4 PSD files and 4 JPEG Files
Perfect for any project and easy to use!
Check out some examples how the textures were used http://shawnroelofsen.com/wordpress/2011/04/high-res-broken-glass-texture-pack/