This is a replacement kit for mikuni bst carbs. This replaces the old, cracked, worn out, seals for the fuel crossovers. Any size bst carb. Mikuni Bst Carburetor Fuel Crossover Seals Inlet Nipple. Condition is New. You will receive 10 o rings that will seal up 1 connector(2 sides) exactly as pictured. Perfect fit, easily replaceable. Contact me for fitment details. If your rack of carbs has the plastic tee like the one pictured, these will fit. Thanks for looking! THIS IS FOR THE O-RINGS ONLY. THIS AUCTION DOES NOT INCLUDE THE T-CONNECTOR IN THE PICTURES. YOU WILL ONLY RECEIVE THE 10 SEALS IN THE PICTURE.