The marking on the bottom is a capital "B" and on the shaft "0 20" except the "0" is more like an "O" with the State of Florida inside it. Turn the cam further and on one there is the letter "D" and on the other clearly the letter "M" and looks like there might be a "D" and "M" following them but they didn't take very well. Stand them on end and one is 4 3/4" and the other 4 5/16". This item came from anonymous storage and is offered as is. They could be the old cams from an engine modificatrion or they could be unused cams from a Harley big bore conversion kit but it is sold as is. Bearings look like they have never been packed. Marked as for year 2000 FLHR but good for the time range of the engine. There is a little corrosion to one, it should come off but I have not messed with it. USA only for this item although exception considered for example to Canada. Four pounds packaged. If a flat rate box comes out cheaper we will use that instead and issue a rebate. Following information from a Harley website: When stock cams just won’t do. This Big Bore Kit provides the parts you need to increase the horsepower of your EFI-equipped model. The kit increases the displacement of your ’99-’06 Twin Cam 88 from 88 cubic inches (1450cc) to 95 cubic inches (1550cc). Includes Stage II (SE203) cams, 3-7/8" cylinders, 3-7/8" pistons, clips, air cleaner and breather, high-performance clutch spring, hardware and gaskets. requires separate purchase of primary cover gasket and Air Cleaner Trim ring. (not all components shown.) All EFI-equipped models require ECM calibration (priced separately). For race application only. Black. (Image not shown) Fits ’99-’01 fuel-injected Touring models. ’99 models require Splined Cam Sprocket P/n 25716-99. Superceded from: 29492-99, 29492-99A, 29492-99B and 29492-99C