The new type of oil pressure pull wheel tool adopted for easy operation. Traditional ordinary pull wheel leading to great effort needed. Freely rotate.Upon the center point from pull wheel to piston,the center point to be pulled is easily met. Technical parameters ZYL Integra-Unit Hydraulic Gear Puller Model ZYL-5 ZYL-10 ZYL-15 ZYL-20 ZYL-30 ZYL-50 Rate Output(T) 5 10 15 20 30 50 Max Spread(mm) 200 250 300 350 400 500 Max Stroke(mm) 50 50 50 60 60 60 Weight(kg) 7.5 11 15.5 19 25 35