Lyman .45 caliber for Parker Hale Whitworth rifle, 475 grain Maxi bullet mold, single cavity, steel blocks only. Lyman Maxi bullet designs are exactly reproduced from originals used over 100 years ago. The best bullets selected from American and British designs from .45 to .58 caliber. These precision mold blocks are made in the U.S.A. and tend to cost a bit more than other brands. They are nice quality. Special steel alloy mold blocks hold heat, for even casting temperature. Steel blocks almost never wear out, if properly stored. Blocks are made in one size, single cavity for large bullets. Mold handles are sold separately.