Key features

• •STYLISH AND STRONG DESIGN: Stylish and lightweight hollow-out design that's both beautiful and strong, made from high-quality aluminum alloy materials for durability and a long lifespan.
• •WIDE RANGE OF APPLICATIONS: 28.9mm center distance for enhanced compatibility with mountain and road bikes, accommodating a wide range of chainring sizes (40/42/46/50/52T for mountain, 34/36/40/42T for road).
• •PERFECT SIZE: Total length of only 50.8mm for optimal compatibility and stability, ensuring a smooth and reliable ride (too short center distance can affect compatibility, while too long can affect stability).
• •IMPROVE PERFORMANCE: Upgraded structure for precise adjustment and faster variable speed response, with an expanded fine-tuning range and no limit positions for easier adjustments.
• •SAFE AND STABLE: Radial grooves on the tail hook fitting surface increase friction and prevent looseness caused by vibration during riding, while the locking screw made of 7075 aluminum alloy provides greater locking torque for added security.