Material: High strength Aluminum 7075-T651

Color: black/sliver

Size:for force 107bcd Q four-claw crank

Speed: only for Sram AXS 12s chain, not for other chain

Tooth:46-33T 48-35T 50-37T 52-39T

Weight:

124g(46-33T)

146g(48-35T)

168g(50-37T)

193g(52-39T)

Package content:

2pcs chainrings and 4pcs bolts