Check the listing for details. Mr Gasket 4362 Engine Port Polishing Kit. Condition: New, Made in China. Listed at 101.51 USD. Engine Port Polishing Kit. Engine Port Polishing Kit; Incl. 1 Tapered Cutting Stone/One 1 in. Mini Grind-Flex Flat Wheel/29 Grind-Polishing Rolls/3 Various Length Mandrels;. Now an important part of Holley Performance, Mr. Gasket continues to expand application coverage with more and more new products for race cars and muscle cars alike.