Crabworx Shells provide a new home for your growing Hermit Crab. Several different sized shells should be made available in order to prevent crabs from fighting over shells or not being able to find an appropriately sized new home. With the Crabworx Shells, you are ensuring your hermit crab a comfortable home. Crabworx Shells are available in small, medium and large sizes. Crabworx has a variety of other hermit crab supplies available including hermit crab tanks, hermit crab food, hermit crab bowls, hermit crab food dishes, hermit crab enclosures, hermit crab aquariums, hermit crab water conditioner, hermit crab toys, and other hermit crab tank accessories.