Pyrex hoppers to fit the Mark VII line of reloading machines. Although the Dillon hoppers will fit, they are just slightly undersized for the Mark VII measure. This one fits snug and solid.
Available in both the standard and medium sizes. The standard size is shown in picture below and is 4″ shorter than the one that comes with the press.
They come with a custom cap that has an O-ring to seal the hopper and help keep moisture out. They also come with a custom baffle to insure consistent powder drops.