This product listing is for a caliber specific funnel HEAD ONLY no funnel or billet storage block included. The Area 419 billet aluminum powder funnel uses a system of interchangeable caliber specific heads to make it the ultimate funnel for reloaders available today. Universal plastic powder funnels have several issues that are solved with this system. Static cling plastic is prone to being charged with static and kernels of powder will stick to the walls causing you to have to tap the funnel to get them all to fall. The Area 419 Funnel’s interchangeable heads thread onto the funnel and are neck diameter specific for each caliber (color coded to keep track of them). The do not rely on fitting over the body of the case to hold in place. They are sized slightly larger than the neck diameter so that they hold solid on the case. Each head has a bore sized a few thousandths smaller than the bullet diameter so maximum flow is achieved for each caliber. The interface between the heads and the funnel is designed in such a way that no kernels can ever get stuck between the two as long as the head is tightened completely. The Funnel’s design is both aesthetic and performance driven. Being machined from a solid billet of 6061-T6 aluminum means no static charge to cling kernels to the funnel walls. This also makes it far safer for use with black powder. 3/8″ tall straight section at the top to help prevent kernels of powder from bouncing out when poured in.