- Better after-sales service,we will reply you within 24 hours! - Ship in 0-1 day and reach the delivery within 1-3 working days generally. Chainring Product Description: Brand: BUCKLOS Bolt Center Diameter: 110mm BCD Teeth: 34-50T/36-52T/39-53T Material：AL7075 Aluminum alloy Color: Black Shape: Round Type：Single/Double speed chainring Weight: 34T:About 33.6g 36T:About 39.6g 39T:About 45.8g 50T:About 114.4g 52T:About 123.9g 53T:About 126.8g Compatible with: 11 Speed Applicable：Road Bike Package: 1pc Chainring Compatible Model：Dura-Ace R9100，Ultegra R8000, 105 R7000，R8000，R9000 Blots Product Description: * Material: 7075 Aluminum Alloy * Type:FC-R7000/FC-R8000/FC-R9100 * Color: Black (as pictured) * Weight: approx 52-59g Package includes: 4 x chain ring bolts Feature: * Brand new and.