Pack of 5.5 cm diameter wheels for installation in a RackMatic Mobirack and Mobirack-HQ rack cabinet. The cabinets in the MobiRack range do not include wheels by default, but they can also be purchased separately. This reference includes a pack of 4 wheels. specs 5.5 cm diameter wheel. Pack that includes 2 braked wheels and 2 free wheels. Compatible with Rackmatic Mobirack and Mobirack-HQ rack cabinets, range #WL2xx and #WL3xx. Maximum load per wheel of 250 Kg