Running on rechargeable 15.6 V 3 Ah NiMH battery, Model EY6535NQKW works as drill or heavy-duty impact driver. User snaps on 1/2 in. keyless chuck for drilling into wood and metal, from 0-650 rpm at 286 lb-in. Quick-change 1/4 in. hex attachment can be used for screw driving. Impact mode allows fastening into wood, metal, and concrete from 0-2,200 rpm, at 1,100 lb-in. and 3,300 ipm, with little kickback.