motor without brushes 20V of voltage Speed at no load: 0–930 rpm Rate of impact: 0–4400 bpm Energy of impact: 4.5J Maximum drilling capacity: 28mm for concrete Metal: 13 mm Wood: 40 mm Chuck system with SDS Plus Contains: 3 pcs of 8, 10, and 12 mm drill bits One piece of chisel One grease tube piece One spanner piece Separate sales of the battery and charger enclosed in a color box.