The base is ideal for the mobility of your machines when not having enough space.All steel bases are size adjustable and are equipped with two fixed wheels in the back and two castor ones in the front.The smaller base can be fitted with a machine of 460 mm to 610 mm and a weight of 250 kg. And the larger one can be fitted with a machine from 610 mm to 860 mm and a weight of 500 kg.