250mm Wide Water Flow Bi Level Wash Brush Head Only Plastic Stock with Bumper strip Synthetic Bristle The thread in this brush is an ACME thread - If you are purchasing this head only as a replacement you need to check that your handle has a compatible thread. This brush will fit on the NZ Made extension handles with the adaptor BB398P. Can be used with a variety of different water flow extending handles Also can be used as a dip and wash brush on a standard handle