Tinksky Fish Tank Aquarium Shrimp Retractable Square Small Betta Tetra Net (Black) Color: mainly black Material: Nylon + stainless steel. Square Net Size(L*W): Approx. 70*70mm 2.8*2.8inch. Length: Approx. 210mm 8.3inch (can be extended to 410mm). Ideal for catching shrimp, small fish in tank. Net frame is firmly fixed to the handle.