The full range of 16v and 20v brushless systems gives you variable speed control and a safe braking system with a versatile battery and allows for a large number of charge cycles Battery voltage20v Output shaft:1/2"Quadrilateral axis No-load speed:1800r/min Impact frequency:2200bpm Maximum torque:1000N.m Net weight:3.3Kg Bolt specification:M12-M24 Delivery time:30 days for OEM,15 days for ready goods Payment method:T/T,L/C Standard accessory:BMC BOX*1,battery*2,charger*1