Designed to fit radioimmunoassay tubes up to 16mm in diameter; 120 tube capacity. Great for storage, transport and organization. Made from lightweight yet durable high density waterproof, non-scratching, anti-rattle, non-toxic black foam material. Note: Avoid halogens, strong oxidizing agents, benzene, petroleum ether, aromatic and chlorinated hydrocarbons. Easy to clean (can be washed and rinsed, top rack dishwasher safe). Measures approximately 14" x 11.75" x 2".