Every bit for every project: 105 screwdriver bits and 22 precision bits. Project Bit and Driver Set can take on projects around the house or in the garage. Precision Bit and Driver Set for repairing laptops (Mac, MacBook), mobile devices (iPhones, smart phones), game systems (PS2, PS3, Xbox 360, Wii, Vita, PSP, DSi, 3DS), and other precision items like wristwatches and eyeglasses. Security Bit Set for removing tamper-resistant and security fasteners. Ratchet driver features a 3-position drive (forward, fixed, reverse) and magnetic bit holder.