Rotor Q Ring Q39T 53 Bcd110X4 Inner Black chain ring Up to 10 Days of

Up to 10 Days of Battery Life in Smartwatch Mode

Body Battery Energy Monitoring

Compatible Models- Shimano DuraAce 9100/9150

The extension is made from Stainless steel and CrV

Multi Shell In Mold: For safe shock absorption

Rotor Q Ring Q39T 53 Bcd110X4 Inner Black chain ring Up to 10 Days ofFeatures Inner oval chainring designed for improved pedaling efficiency and reduced muscle fatigue. BCD 110x4 pattern offers compatibility with modern 4 bolt cranksets. Optimized for use with 53T outer chainrings for smooth shifting performance. Black anodized finish ensures durability and a sleek appearance. Specifications Teeth: 39T BCD: 110x4 Position: Inner Color: Black