4" 100mm automatic castors with blue rubber wheels that have a unique self-centering castor that swivels back to its original position when lifted off a surface. To use, just lift your case and each castor will quickly return to their starting alignment, ensuring that you no longer need to manually spin them. This makes stacking cases faster, safer and require less hands. Available in swivel or braked options.
Safe Load: 200Kg (Per Caster)