Includes 675 pieces of the 5 most popular self-tapping screws in a durable carry case. 25.4mm (1″) fine thread pan head x 150, 25.4mm (1″) coarse thread pan head x 150, 31.8mm (1-1/4″) fine thread Maxi-Loc™ x 150, 31.8mm (1-1/4″) coarse thread Maxi-Loc™ x 150, 63.5mm (2-1/2″) coarse thread Maxi-Loc™ (Blue-Kote™) x 75.