Protect shrimp and fish - The mesh of the filter cover is small, which can avoid sucking small shrimp and fish. Prevent blockage - Can prevent large foreign objects from being sucked into the filter system and clogging it. Application - Fine and smooth mesh can prevent baby shrimp or fish from being sucked into the filter and protect shrimp and small fish safely. Suitable for use in aquariums and aquariums. Easy to install - Easy to install and convenient to use. It is recommended to regularly clean the stains accumulated on the filter protector with a brush. Specification - Package includes: 2 pieces. Made of stainless steel. Sturdy and durable, compact and resistant to deformation. Inner diameter: 16mm, outer diameter: 30mm. Length: 85mm Weight: 16g per piece