... Ball, roller, nylon or without bearing(4) Type: Solid, pneumatic, PU foam ... 50-4, 2.50-8, 3.00-4, 3.50-4, 4.10/3.50-4, ... 3.00-8, 3.25/3.00-8, 3.50-6 ... , 3.50-7, 3.50-8, 4.00-4, 4 ... .00-6, 4.00-8, 4 ... .80/4.00-8, 5.00-6, 6.50-8 rubber wheel 4.80/4 ...