Product Description The TA Chinook11 is a 10-/11-speed chainring for MTB. Specifications:Application:All Mountain, Cross CountryAttachment:104 mm bolt circle diameter, 4-armTeeth:42 T, 44 T, 46 TGearing:3x10-speed, 3x11-speedTechnical Information:Material:aluminium (7075-T6)Compatibility:for MTB cranks with 104 mm bolt circleouter position (for 18 mm thick pick-up/chainring covers)Features:CNC manufactureddesigned and produced in France Note:Chainrings with an older production date have an " 10" printed on them, while chainrings with a more recent production date have " 11" printed on them. However, there is no difference in compatibility (10- to 11-speed).Manufacturer Numbers:42 tooth:PL-41104339-4244 tooth:PL-41104339-4446 tooth:PL-41104339-46Contents:1 x TA Chinook11 chainring Manufacturer: Spécialités T.A. 41 bis rue de Laon 02150 Sissonne France france@specialites-ta.com