Plumbing Kits for Camper Van Sinks and Combination Units

Not fully happy

Thought i was buying a quality kit found the water canisters to be very good with the two peace lid, however was disappointed with the hoses being supposed to be used with different hose sizes 10mm & 12mm does not work, had to buy new hose clips maybe wrong size supplied ? and using a corrugated drain hose is just poor fitting into the hard plastic entry into the drain canister I had to find my own connection again just cheap/ no fittings all round, just disappointed had to spend more money on a kit purposely made. would like to Mention I worked making hand built cars for 35 years so understand all aspects of fixtures and fittings to make everything fit together seamlessly would appreciate a response before a negative review elsewhere