12-20mm Green - Fits 1/2" Flexi Hose. 16-22mm Yellow - Fits 3/4" Flexi Hose. 22-32mm Orange - Fits 1" Flexi Hose. 25-40mm Red - Fits 1.25" Flexi Hose. 35-45mm Black - Fits 1.5" Flexi Hose. 40-60mm Dark Blue - Fits 2" Flexi Hose.
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