These 7/8" diameter cylindrical containers with screw on lids are hand made from genuine buffalo horn or bone. A great spot to store your spare firing pins, sights, nipples, small parts, etc. Identical to those found in the best English and Continental gun cases of the early 19th and 20th century. Superb quality and absolutely indistinguishable from the originals. Height varies from 1 1" to 2"