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===under info was translated buy computer===
Battery voltage: 21V Battery total capacity: 20000mAh No-load speed: 0~2800r/min 0~2300r/min 0~2000r/min Torque: 290~320N. M 260~290N. M 220~260N. M This brushless lithium electric driver adopts brushless technology, no carbon brush replacement, more convenient maintenance. Three - speed speed regulation, suitable for any working environment. A battery pack can provide the user with all the work they need for a day. High efficiency, for outdoor construction personnel is the best choice.contact supplier or email to admin@b2bgood.com for transport and cleanrance agent
