Camlock Hose Coupling Fitting Male Female - Type E + C Cam & Groove (All Sizes Available). CAMLOCK C TYPE - slot with hose adapter is made of POLYPROPYLENE. It can be use for precise and quick connections of any hose kind, with different diameter. CAMLOCK E TYPE – pin with hose adapter is made of POLYPROPYLENE. It can be use for precise and quick connections of any hose kind, with different diameter.