Diamond Networks has a wide range of Polystyrene Dog Bone/Crab Floats available for purchase in store or online. We stock Round Polystyrene as well as the dog bone floats which are perfect for crabbing. Our 100mm Polystyrene Dog Bone/Crab Floats are High density and quality floats which can be used for a variety of purposes, such as flotation as well as marking your number on them for the various fishing activities that require this.