Features 1、100Pcs multi-function security bits, meeting your needs. 2、Constructed of chrome vanadium steel for durability. 3、Also includes a magnetic quick-change extension for added convenience. 4、Organized in a compact carrying box for easy transport to any job. 5、The sizes are printed on the box for easily distinguish. Specification This complete set of security bits contains everything you need to gain full access to protected components. Features: 100Pcs multi-function security bits, meeting your needs. Constructed of chrome vanadium steel for durability. Also includes a magnetic quick-change extension for added convenience. Organized in a compact carrying box for easy transport to any job. The sizes are printed on the box for easily distinguish. Specifications: Material: Chrome Vanadium Steel Drive Type: Tri-Wing Type: Security Bit Set System of Measurement: Metric Chuck Type: Slotted Package Weight: 670g / 23.63ounces Package Size: 195 * 138 * 80mm / 7.68 * 5.43 * 3.15in Packing List: 11 * Slotted: 3.0mm, 4mm, 4.5mm, 5mm (x2), 5.5mm, 6mm (x2), 6.5mm, 7mm, 8mm 9 * Cross: PH0, PH1 (x2), PH2 (x5), PH3 8 * Pozi (8 pcs): PZ0, PZ1, PZ2 (x5), PZ3 4 * Square: S0, S1, S2, S3 12 * Star: T8, T10 (x2), T15 (x2), T20 (x2),T25, T27, T30, T40, T45 19 * Hex (2pcs each): 1.5mm, 2mm, 2.5mm, 3mm (x3), 4mm, 5mm, 5.5mm, 6mm, 8mm 4 * Slotted with Center Hole: 4mm, 6mm, 8mm, 10mm 9 * Star with Center Hole: 8, T10, T15, T20, T25, T27, T30, T35, T40 6 * Hex with Center Hole: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm 3 * Butterfly: #1, #2, #3 4 * Three-wing: #1, #2, #3, #4 3 * Windmill: 6, 8, 10 3 * M-type: M5, M6, 8 1 * 60mm Magnetic Bit Holder 1 * 1/4 in. x 50mm Socket Adapter 1 * 1/4 in. x 25mm Socket Adapter 1 * 1/4 in. x 25mm Coupler 1 * Y-shape Hook Driver 1 * Storage Box Package List 11 * Slotted: 3.0mm, 4mm, 4.5mm, 5mm (x2), 5.5mm, 6mm (x2), 6.5mm, 7mm, 8mm 9 * Cross: PH0, PH1 (x2), PH2 (x5), PH3 8 * Pozi (8 pcs): PZ0, PZ1, PZ2 (x5), PZ3 4 * Square: S0, S1, S2, S3 12 * Star: T8, T10 (x2), T15 (x2), T20 (x2),T25, T27, T30, T40, T45 19 * Hex (2pcs each): 1.5mm, 2mm, 2.5mm, 3mm (x3), 4mm, 5mm, 5.5mm, 6mm, 8mm 4 * Slotted with Center Hole: 4mm, 6mm, 8mm, 10mm 9 * Star with Center Hole: 8, T10, T15, T20, T25, T27, T30, T35, T40 6 * Hex with Center Hole: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm 3 * Butterfly: #1, #2, #3 4 * Three-wing: #1, #2, #3, #4 3 * Windmill: 6, 8, 10 3 * M-type: M5, M6, 8 1 * 60mm Magnetic Bit Holder 1 * 1/4 in. x 50mm Socket Adapter 1 * 1/4 in. x 25mm Socket Adapter 1 * 1/4 in. x 25mm Coupler 1 * Y-shape Hook Driver 1 * Storage Box