Enhance your cycling performance with the precision-engineered Bicycle Integrated Hollow Crankset, model ZK-45. Crafted using advanced CNC anodizing technology, this crankset is designed for durability and high performance, compatible with both 10-speed and 30-speed bicycles. Featuring a robust combination of aluminum alloy and molybdenum chromium steel, it offers exceptional strength and wear resistance while maintaining a sleek black finish. Key Features: · CNC Anodized Integrated Hollow Crankset: Ensures superior durability and corrosion resistance, delivering a long-lasting, professional-grade component for your bike. · Compatible with 10-Speed and 30-Speed Systems: Designed to fit a wide range of bicycles, providing versatility and ease of upgrade. · Multiple Chainring Sizes with Precise BCD: Includes 42T (BCD 104mm), 32T (BCD 103mm), and 22T (BCD 64mm) chainrings to optimize gear ratios for various terrains and riding styles. · Optimal Crank Center Distance: 170mm (6.7 inches) crank arm length balances comfort and power transfer for efficient pedaling. · High-Strength Materials: Constructed from premium aluminum alloy and molybdenum chromium steel for enhanced wear resistance and a stylish, durable appearance. · Reduced Friction and Noise: Designed to maximize chain retention and minimize friction, extending the service life of your drivetrain while providing a quieter ride. · Smooth and Efficient Rotation: Facilitates easy installation and ensures smooth pedaling, reducing rider fatigue and improving force transmission from pedal to wheel. Specifications: · Item Type: Bicycle Integrated Hollow Crankset · Model: ZK-45 · Color: Black · Process: CNC Anodizing · Applicable Speed: 10 Speed, 30 Speed · Crank Center Distance: Approx. 170mm / 6.7 inches · Number of Teeth on Chainrings: 22T, 32T, 42T · Crankset BCD: 22T (64mm), 32T (103mm), 42T (104mm) Package Includes: · 1 x Bicycle Integrated Hollow Crankset Upgrade your bike with this high-performance crankset that combines strength, precision, and smooth operation to deliver an exceptional cycling experience. Ideal for riders seeking durability, efficient power transfer, and reduced drivetrain noise on every ride.