This is the Moddbox Stainless Steel Quick Change M90 Pulley Adapter. This adapter is only compatible to the Thunderbird Eaton M90 Gen3 Supercharger (89-95 Ford Thunderbird) or supercharger snouts having a 0.64″ diameter drive shaft.
Prices are in USD. This product ships from Canada. Canadian customers will be charged taxes based on their local provincial or territorial tax rate. US customers are not charged tax, but duty and brokerage fees may apply.