stable performance and durability. Adopts b-magnetics motor, no-load speed up to 250rpm, with rotation-speed-protection function. When rotating with the all-metal gearbox, the concentricity of the batch head is lt;0.2mm, which effectively improves the working efficiency. Wide applications, suitable for repairs and maintenance of electronic products and precise instruments such as motorbike, cellphones, watches and home appliances. Three specifications avaible, you can choose 1pcs set, 12pcs set and 88pcs set according to your demands. 1pcs set: 1pcs screwdriver only (free gift: 1pcs USB cable, 1pcs bit). 12pcs set: 1pcs screwdriver and 11pcs different screwdriver bits (free gift: 1pcs USB cable, 1pcs bit). 88pcs set: 1pcs screwdriver, 19pcs different screwdriver bits, 66pcs screws, 1pcs USB cable, and 1pcs bit. Specifications: Name: Screwdriver and Drill Bits Set Battery: 1 * 3.6V, 1300mAh battery (included) Rotation speed: Max 250r/min Max torque force: 0.15Nm and 1.3Nm Item size: 175 * 23 * 23mm / 6.89 * 0.91 * 0.91in Package size: 1pcs set: 180 * 40 * 35mm / 7.09 * 1.57 * 1.38in 12pcs set: 180 * 40 * 35mm / 7.09 * 1.57 * 1.38in 88pcs set: 180 * 100 * 35mm / 7.09 * 3.94 * 1.38in Package weight: 1pcs set: 120g / 4.23ounce 12pcs set: 140g / 4.94ounce 88pcs set: 175g / 6.17ounce Packing List (1pcs set): 1 * Screwdriver 1 * Type-C Cable 1 * Bit OR Packing List (12pcs set): 1 * Screwdriver 1 * Type-C Cable 7 * Different Screwdriver Bits 4 * Extension Rod 1 * Magnetizer OR Packing List (88pcs set): 1 * Screwdriver 1 * Type-C Cable 10 * Different Screwdriver Bits 9 * Extension Rod 66 * Screws 1 * Magnetizer 1 * Accessory