The science of hockey has taught us that performance starts at the wheels. Kemistry Grippium Inline Roller Hockey Wheels are grippy, speedy, and can take a beating. These inline wheels are Extra-Soft/Yellow. Choose your wheel in size 72mm, 76mm or 80mm. Grippium inline wheels are grippy, speedy, and can take a beating Designed for roller hockey with performance and durability in mind Yellow X-Soft Choose your wheel in Size 72 mm, 76mm or 80mm