yes,its under combine parts in the AandI book. I've put bolts in place of roll pins until they were loose then tried drilling out the shaft to put bigger bolts in. do not do that!!!lasted only around 3 hours. then got desperate and took shafts to a machine shop and drilled out top and threaded, then a keyway. worked beautiful,have around 9000 acres on a 8row head. then found the AandI shafts for less money than the machine shop charged me.so i took 2rows {4shafts}and have run them for 8 years, not one problem, and thats around 8ooo acres. I think its a great product.