The wh18dgl impact driver is a compact and powerful machine with a fan cooled motor and all metal gearing for increased durability and increased service life offers up to 145nm of torque with a single speed variable and reverse feature wh18dgljf 2 x 18 volt 25ah li ion batteries wh18dglj4 bare unit no battery or charger supplied specification bit holder 635mm 14in no load speed 0 2400min impact rate 0 3200bpm max torque 145nm capacity bolt m6 m14 ht bolt m6 m14overall length 166mm weight 104kg