This is a set of four wheels, consisting of two right wheels and two left wheels. All four wheels are required to be driven by gear motors or holonomic system.
 
Specifications: 
 
?Outside wheel diameter: 100mm
? Anodized Aluminum plates: White color
?Width: 50mm
?Number of Rollers: 9
?Number of Plates: 2
?Body material: Aluminium alloy
?Roller material: PA+PU
?Spacer material:Nylon
?Length of roller:47mm
?Net weight: 1.6kg
?Load capacity: 50kg