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NLB-600 universal power wrench can quicklyand easily tightens and loosens all wrenchedjoints along the track. Accurately controlledand stable. This machine uses gasoline engineas power, the output shaft is single-head,single-speed, forward and reverse adjustable,output torque can be manually adjusted andaccurately displayed, the whole machine iseasy to operate, safe and reliable, and conve-nient to go up and down, and can be equippedwith lighting lamps for supply Lighting at thesleeve head during night work.