Robust Design. Rubberised Wheels. 50kg Load Per Caster. Durable Black Powder Coat FinishWheel Diameter: 50mm Working Load: 50kg (Per Caster) Height: 72mm Mounting Base: 50 x 70mm Fixing Holes: 8.3mm. A robust 50mm caster with black coated steel frame and ball bearing swivel. The wheel is rubberised plastic and will withstand hard use. The caster can be fixed with four screws or bolts through the base plate. Suitable for any type of cabinet or flight case. When choosing casters for your flight case- be sure to consider the weight of the equipment inside the case- the terrain on which the case will be used- and the environment in which the case will be stored. Rubber caster wheels with a 50mm diameter are a good choice for many applications where the equipment is not exceptionally heavy and the case will run over reasonably smooth ground. Each of these casters will support 50kg- so a total load of 200kg on a standard 4-wheel configuration. There is a choice of breaked and unbreaked.. flight case caster-flight case wheel