HD-OEM: 18522-53Part Number: 10-0570 Manufacturer: Sifton UOM: 1 - SET Summary:Replica assembly includes installed standard roller assembly and adjuster screws. Tappets have an inner diameter of 12.65mm.Fitment: FL 1953-1984 FX 1971-1984 FLT 1979-1983 FXR 1982-1983 Measurements: Roller Diameter: 21.7 mm Pin Diameter: 5.60 mm Needle Diameter: 2.00 mm Country of Origin: Imported