Lee Minie Moulds feature an Automatic Core Pin. Open the mold upside down to the empty. Close it and you're ready to cast the next. The core pin automaticaly centers in the mold. Easily cast 200 per hour. A quality mold built to last as long as your rifle. All Lee mould blocks are made from aluminum because of the exceptional moulding qualities. The mould cavities are CNC machined for unmatched roundness and size control. Most bullets from Lee moulds can be used as cast without sizing.Handles and sprue plate are included.