Dual 1/4 inch Random Flow Generator with 1/2 inch thread adapter

3DReeF Dual Random Flow eductor Generator .It generates a Random Flow pattern in your aquarium. the thread is 1/2 inch and divides into 2x 1/4 inch Flow Eductors. Available in 3 main colours Black,Neon green and orange.Neon green colour glow below Uv light.