FSA Gossamer ABS chainrings are designed to provide flawless shifting, with minimal weight and unmatched durability. - Shifting ramps and stainless steel pins on outer rings - N-11 chainrings are compatible with all 10 speed drivetrains, and compatible with FSA, SRAM and Shimano 11- speed drivetrains - Compatible only with FSA Gossamer ABS cranks (will not properly fit K-Force or SL-K cranksets) - Precision CNC machined AL7075/T6 alloy - MPN: 370-0158004050 - UPC: 840031074836 Specification:- - Chainring BCD 120 - Color Black - Defined Color Black - Drivetrain Speeds 10 - Drivetrain Speeds 11 - Material Aluminum - Ring Position/Type Outer - Tooth Count 48