Quantum Bearing Science Metallic Series sp26 Certification: EN 1078 European bike

Certification: EN 1078 European bike and skateboard helmet standard

96a Hand Poured Urethane Pivot Cups

Vents: 11 Open Vents

Crew sock with half cushion foot-bed

Also creating less of that wasteful packaging

Quantum Bearing Science Metallic Series sp26 Certification: EN 1078 European bikeA twist on the classic. The Metallic series bearings are made with high purity, high quality carbon steel for the inner outer rings and roller balls. Then they run the raceways and roller balls through a proprietary diamond finishing process. From there Quantum includes high tensile strength, hydrophobic retainers these bearings were designed with stability, flow, and mechanical strength in mind. Each bearing is coated using their GraphFlo(TM) process