Features： 1、Aluminum Construction: Crafted from premium aluminum alloy, this chainring crank set is built for durability and reliability, ensuring a long lasting lifespan that withstands the demands of cycling. 2、Universal BCD110mm Compatibility: Designed to the BCD110mm standard size, this crankset fits most cycles crank chainrings, offering versatility and ease of installation for a wide range of cycles. 3、Smoother Shifting Performance: The 42T chainring, equipped with a BB68 threaded bottom bracket, guarantees smoother shifting and enhances cycling speed, providing a seamless riding experience for cyclists. 4、Flexible Speed Compatibility: Compatible with 9 to 11 speed cycles, this crank arm set caters to different cycling needs, making it adaptable for various types of rides and preferences. 5、Precise Engineering: Excellently crafted with precisely calculated gaps between chainring, this crankset ensures stable transitions during shifting, greatly enhancing the overall cycling experience. Specification： Item Type: Chainring Crank Set Material: Aluminum Alloy Teeth: 42T Specification: BCD 110mm Axle Diameter: Approx. 24mm/0.9in Compatible: 9 to 11 Speed Bottom Bracket: BB68 Threaded Bottom Bracket Package List： 1 x Chainring 1 x Crank Arm 1 x Bottom Bracket 2 x Accessories