Feed Rate Part, Compatible with Grainger Part Number 21XZ52, 21XZ54, 4NA11, 4NA12, 4NA13, 4NA14, 4NA15, 4NA16, Compatible with Manufacturer Model Number 45MJL5A1STG1, 85MJH1A1STG1, 85MJH2A1STG1, 85MJH7A1STG1, 85MJL5A1STG1, DM5040D, FC5040D, FSK100, Product Type Variable Cam, Compatible with Brand Stenner, Package Quantity 2