1. Includes: comes with 13 bits and drills, and bit adaptor. a) Philips power bits: 2.9mm, 4.4mm, 6mm b) Square recess bits: 2.35mm, 2.9mm, 3.3mm c) slotted bits: 4.4mm, 6mm d) Drill bits: 1.6mm, 2.4mm, 3.2mm, 4mm, 4.8mm 2. Holds a variety of other bits and drills using the bit adaptor. 3. With general cordless electrical drill matching use. 4. Weight: 235g 5. Warnnty: 1-year * Advantages: Quickly change bits Never drop or lose one