CLEARANCE: Mismatched set of black anodizedCNC aluminum exhaust flanges. This set contains one flange with the normal "small hole" at about 45.5mm, and the other flange has the normal "large hole" that measures about 48.5mm. The smaller hole flanges are normally used on models such as 850T, 850T3,1000SP, SP2, SP3, G5, T4, Mille GT, 850 LeMans III, V1000 LeMansall years, California II, California III, California 1100,and most other 1100cc California models (EV, Jackal, Bassa, etc)that do not have the crossover in the head pipe. The larger hole flanges are normally used on 1976-1978 850 LeMans, and Daytona/Centauro. Maybe you can make the necessary adaptation to use them on the engine of your choice. At this price, you're buying one and getting the other for free. Clearance price, all sales final.