FXIED GEAR bike, 1/2" x 1/8" CHAIN - Good for 1x track bike, fixie bike ,BMX , 130mm BCD.
Alu7075 from USA, HIGH STIFFNESS - High precision CNC machined 7075 T651 Aluminum supplied by USA Aleris / Alcoa. Long-lasting construction. HB150 excellent stiffness, 4mm thickness, anodized black.
LIGHTWEIGHT - Lightweight with inner side cut off but stiffness design, 104g(48T) , 160g(60T).
Chose by lots of professional track riders in EU and USA, lifespan 15,000km.