I have some but I'm unsure if they have the wider bolt pattern that the first R50's need. You could send some old bars down to Este's mfg. and they will fix them up for you. let me know if you need the address and I'll try find it. I'm sure it was less than $50 a bar to have them fixed up. Maybe Hyper has got some bars or has Este's number handy. Maybe Hyper could tell us what is the best number of half height bars to use in corn and soybeans. let me know if I can help you more. To answer Daves' question they are cylinder bars with the rasp cut down to about half the height of original and then a bead of hard surface weld is placed on top of rasp. If you still have the narrow rasp (1_2") they will cut every other rasp right out. I think the latest is to leave about three rasps at full height to get a little more stiring action.