If you get the 15" it will screw straight on an angle adapter but if it`s the square version you will have to glue an angle adapter into the lined thread.You must jet these at the top of the brush otherwise to many bristles need to be removed,it also works better like that for rinsing on.Get 1 from Peter he normally fans his mono brushes,a fan of water with this brush is good cos it keeps the bristles wetter and it seems to float over the glass more with fan jets,i wouldn`t recommend fans on all brushes but i would on this 1.