Moroso Performance Stud Girdles Hex Head Adjusting Nuts Features: For Use w/Moroso Stud Girdles Hex Head Design Allows Easier Valve Adjustments w/A Set Screw Providing A Positive Lock Fits Either Stock Or Roller Rockers Four Per Pack Height: 0.88 Width: 5.38 Length: 7.19 Weight: 0.61 lbs Fitment: UNIVERSAL 0 - 0 NON APPLICATION SPECIFIC