The Nomad Fiber Floor Tom Cases have adjustable depth from 1422″ and the following diameters:14 in. case has a 16″ in.diameter.15 in. case has a 17 in. diameter.16 in. case has a 19 in. diameter.18 in. case has a 21 in. diameter.Nomad drum cases are made from lightweight, durable fiberboard with water absorption inhibitors and are reinforced with protective metal hardware, all attractively chrome plated. They feature contoured injection-molded handles with double reinforced handle mounts. The one-piece, wear-proof strap design is secured with a nonslip toothless buckle. All drum cases are a Multifit design with an extra-deep lid that permits each case to accommodate drums of different heights, so if you change a drum, you don’t have to buy a new case.