The Answer Holeshot Expert Hubset utilize features and specs that give the edge towards racing to the podium. Lightweight CNC machined aluminum hub shells with minimalistic laser-etched logos, precision sealed bearings, 14mm hollow aluminum center axles with chromoly axle bolts, and a 6 pawl aluminum cassette driver with 16T Shimano style cog put these at the head of the pack. Each driver pawl features 3 individual teeth that engage every 3deg for almost instantaneous engagement creating off the line acceleration. Features: CNC machined Aluminum hub shells Laser etched logos Sealed bearings Hollow aluminum center axles Specifications: Axle Bolts: 3/8" x 24 tpi (front and rear) Driver Pawls: 6 Pawls w/3 teeth per pawl Aluminum Center Axle: 14mm Front Hub Shell Bearings: 15268 (x2) Rear Hub Shell Bearings: 6902 (x2) Rear Driver Bearings: 6902 (x2) Driver: Aluminum (w/ Shimano Style 16T Cog) Spoke Drilling: 28-Hole Front Hub Flange Diameter: 40mm Front Hub Center to Flange: 32.5mm Rear Hub Flange Diameter: 45mm (Non-Drive Side), 58mm (Drive Side) Rear Hub Center to Flange: 28mm (Non-Drive Side), 26mm (Drive Side) Weight: 6.4 oz (Front) Weight: 12.8 oz (Rear)