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 SteelDrive Type: Tri-WingType: Security Bit SetSystem of Measurement: MetricChuck Type: SlottedPackage Weight: 670g / 23.63ouncesPackage Size: 195 * 138 * 80mm / 7.68 * 5.43 * 3.15inPacking List:11 * Slotted: 3.0mm, 4mm, 4.5mm, 5mm (x2), 5.5mm, 6mm (x2), 6.5mm, 7mm, 8mm9 * Cross: PH0, PH1 (x2), PH2 (x5), PH38 * Pozi (8 pcs): PZ0, PZ1, PZ2 (x5), PZ34 * Square: S0, S1, S2, S312 * Star: T8, T10 (x2), T15 (x2), T20 (x2),T25, T27, T30, T40, T4519 * Hex (2pcs each): 1.5mm, 2mm, 2.5mm, 3mm (x3), 4mm, 5mm, 5.5mm, 6mm, 8mm4 * Slotted with Center Hole: 4mm, 6mm, 8mm, 10mm9 * Star with Center Hole: 8, T10, T15, T20, T25, T27, T30, T35, T406 * Hex with Center Hole: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm3 * Butterfly: #1, #2, #3 4 * Three-wing: #1, #2, #3, #43 * Windmill: 6, 8, 103 * M-type: M5, M6, 81 * 60mm Magnetic Bit Holder1 * 1/4 in. x 50mm Socket Adapter1 * 1/4 in. x 25mm Socket Adapter1 * 1/4 in. x 25mm Coupler1 * Y-shape Hook Driver1 * Storage BoxPackage List:11 * Slotted: 3.0mm, 4mm, 4.5mm, 5mm (x2), 5.5mm, 6mm (x2), 6.5mm, 7mm, 8mm9 * Cross: PH0, PH1 (x2), PH2 (x5), PH38 * Pozi (8 pcs): PZ0, PZ1, PZ2 (x5), PZ34 * Square: S0, S1, S2, S312 * Star: T8, T10 (x2), T15 (x2), T20 (x2),T25, T27, T30, T40, T4519 * Hex (2pcs each): 1.5mm, 2mm, 2.5mm, 3mm (x3), 4mm, 5mm, 5.5mm, 6mm, 8mm4 * Slotted with Center Hole: 4mm, 6mm, 8mm, 10mm9 * Star with Center Hole: 8, T10, T15, T20, T25, T27, T30, T35, T406 * Hex with Center Hole: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm3 * Butterfly: #1, #2, #3 4 * Three-wing: #1, #2, #3, #43 * Windmill: 6, 8, 103 * M-type: M5, M6, 81 * 60mm Magnetic Bit Holder1 * 1/4 in. x 50mm Socket Adapter1 * 1/4 in. x 25mm Socket Adapter1 * 1/4 in. x 25mm Coupler1 * Y-shape Hook Driver1 * Storage Box