Wide chainring for 4-arm spiders with BCD 104 mm, CNC milled in Europe form AL7075 T6, part of the KMC 10,000km+ program. For cranksets with spider 104 BCD Alu 7075 Black CNC-milled Maximum efficiency which saves battery Perfectly matched to KMC chains Recommended chain: e101EPT 3mm offset Made in Europe Size: 1/2″ X 1/8″ (Single…