Product Description The Zephyr from TA is a chainring for road compact cranks. Specifications:Application:RoadAttachment:110 mm bolt circle diameter, 5-armTeeth:34 T, 36 T, 38 T, 39 T, 40 T, 42 TGearing:3x9-speed, 3x10-speedTechnical Information:Material:aluminium (7075-T6)Compatibility:for Road Compact cranks (110 mm bolt circle diameter)also for MTB cranks before 1993 with 110 mm bolt circle diameter and hole spacing 65 mm (old Shimano MTB standard)Position: centreFeatures:hole spacing 65 mmblack or anodised silverdesigned and produced in France Note:The manufacturer recommends a difference of 12 to 16 teeth between the smallest and largest chainrings.Manufacturer Numbers:black 34 tooth:PL-50110209-34silver 34 tooth:PL-50110202-34black 36 tooth:PL-50110209-36silver 36 tooth:PL-50110202-36black 38 tooth:PL-50110209-38silver 38 tooth:PL-50110202-38black 39 tooth:PL-50110209-39silver 39 tooth:PL-50110202-39black 40 tooth:PL-50110209-40silver 40 tooth:PL-50110202-40black 42 tooth:PL-50110209-42silver 42 tooth:PL-50110202-42Contents:1 x TA Zéphyr chainring Manufacturer: Spécialités T.A. 41 bis rue de Laon 02150 Sissonne France france@specialites-ta.com