3-inch bits fit most power drills, screw guns and magnetic drivers Set includes the most common tamper proof sizes Includes tri wing bits, torque bits, spanner bits and hex bits Tamper Resistant Star: T8, T10, T15, T20, T25, T27, T30, T35, T40. Tamper Resistant Hex: H2, 2.5, 3, 4, 5, 6mm. Phillips: #1, #2. Torq: #6, #8, #10. Tri-wing: #1, #2, #3, #4. Spanner: 4, 6, 8, 10. Pozi: PZ1, PZ2, PZ3. Slotted: 1/4-Inch, Weight: 1.35 pounds, Manufacturer: WIOGW