timb is correct, and there are 7 buckets available for either the 430 or 460 loaders. The have struck capacities of 7.8, 9.0, and 10.7 cu. ft. materials buckets, 9.0 and 10.7 cu. ft. heavy duty materials buckets, and a 15.0 cu. ft. light density materials bucket. Three widths are 51, 61, and 73 in.
Picking the size for the respective FEL is somewhat flexible, but they are all interchangable.