This is a handmade briar pipe that has been carved, sanded and polished by hand for several hours .A nice vulcanite custom made stem was machined to fit perfectly along with an aluminum support ring was machined over the shank to prevent the pipe from ever cracking.This one is non filtered. A very nice daily smoker. Bowl is a larger diameter on this one at 7/8”” x 1.5” and has been coated with a carbon starter.