The Marsblade O1 chassis with wheels and bearings is powered by the patented Flow Motion Technology - a unique rocker that replicates the radius shaped ice blade to simulate ice skating. The rocker is also designed to challenge players balance and to activate the core and stabilizer muscles in order to improve on-ice skating performance. Box Contents: 8x76mm + 2x72mm Revision 82A Hard Wheels, 16 Abec 9 Bearings, Wheel Axles x 8, Bearing Spacers x 8, Multitool x 1, Tech Manual/User Guide x 1. Size: Large (Fits skates size 8-11.5) Medium (Fits skates size 5.5-7.5) Small (Fits skates size 3-5) Model: O1 Kit

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