PLEASE LEAVE AN ORDER COMMENT WITH THE DIMENSIONS OF A SIZED PIECE OF BRASS, SPECIFICALLY NECK DIAMETER AND LENGTH.    Our standard funnel heads come machined to fit the common, standard dimension cases in their calibers. If you’re a guy that likes to mess with necks or shoot odd calibers though, they may not be perfect. This custom head will allow you to have a product made specifically for your cases, however odd they may be. Available for calibers 22 to 50. Please allow up to 1 week for production, as these are all custom machined. If ordered with other products, understand that the order will be spilt and the custom head will ship separately.  Colors may vary dependent on the size as we are just modifying a smaller head,  Many will be raw aluminum.