These are sturdy 44 tooth single chainrings to be used with 50.4 cranksets. They're made from 7075 alloy for long life and lightweight performance..
Product safety information
Manufacturer information:
Velo Orange
6730 Dover Rd, Suite 113
Maryland
Glen Burnie, Vereinigte Staaten, 21060
info@velo-orange.com
https://www.velo-orange.com