Birchwood Casey has pioneered innovative products with an unwavering dedication to quality; Be ready to try gunsmithing with Birchwood Casey’s all-in-one Basic Screwdriver Kit; Gun maintenance is easier than ever before. This Basic Kit includes more than enough of various bits; It has slotted (3, 4, 5, 6, and 7mm), Philips (PH1, PH2, PH3), Pozidrive (PZ0, PZ1, PZ2, PZ3), Torx (T10, T20, T25, T30), Hex (2, 3, 4, 5, 6mm), and one 50mm PH2