Piston Ring sets (6) to complement the Silvolite Flat Top Pistons. See specifications below.Piston Rings - Silvolite Flat TopSKU: UEM-PRS-1185$70.00PriceOverbore*SelectQuantity*Add to CartSpecifications Groove Axial Width Profile Code Material Face Coating Top 5/64” BF Cast Iron Plasma Moly 2nd 5/64” RBT Cast Iron Phosphate Oil 3/16” 3PC Steel Chrome