Feature: 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