The Rio Roller Chassis and trucks are ready to mount and compatible with most recreational quad skates on the market. Use them to upgrade any existing Rio Roller skate to enhance the skating experience even more!These nylon and fibre chassis come with an adjustable stopper thread so will work with an adjustable toe stop.They have been designed and developed exclusively for Rio Roller to provide stronger, more responsive and better turning! Specifications General Specifications Rio Roller Nylon & Fibre ChassisAdjustable Stopper ThreadRio Roller Adjustable Rubber Stopper IncludedRio Truck Polished FinishRio Fixed KingpinRio Bushings 95A SHRFixing Plates Including Washers and Nuts Dimensions Classic Skate Style:200mm: UK 11J / EU 29215mm: UK 12J - 13J / EU 30.5 - 32230mm: UK 1J - 3J / EU 33 - 35.5240mm: UK 4J / EU 37255mm: UK 5J - 6A / EU 38 - 39.5270mm: UK 7A - 8A / EU 40.5 - 42280mm: UK 9A - 10A / EU 43 - 44.5295mm: UK 11A - 12A / EU 46-47Figure Skate Style:200mm: UK 12J - 13J / EU 30.5 - 32215mm: UK 1J - 2J / EU 33 - 34230mm: UK 3J - 4J / EU 35.5 - 37240mm: UK 5J / EU 38255mm: UK 6A - 7A / EU 39.5 - 40.5270mm: UK 8A - 9A / EU 42 - 43280mm: UK 10A - 11A / EU 44.5 - 46295mm: UK 12A / EU 47 Colours Black