Dolphin Wave 100 Combination Gel Brush Set (4)A brand new set of 4 Genuine Dolphin Pool Cleaner Combination Brush Set. These are part grey PVC, with a band of white foam for added grip. Ideally suited to pools which are NOT tiled. These fit the Dolphin Wave 100 and the Dolphin M400 (4 brush model), and some other machines. Some Dolphin cleaners have two full width brushes please check yours first. Fitting: On the M400, undo two screws in the handle and four in each side case and gently remove