4 Pack EH12 Clutch with outer diameter 78.5 mm and inner diameter 15 mm.This set includes four EH12 clutches designed for applications requiring these specific dimensions.The clutch hubs are engineered to fit systems where an OD of 78.5 mm and an ID of 15 mm are required.Suitable for use in various mechanical power transmission setups that utilize the EH12 specification.Compatibility Disclaimer: This is an part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.