IN LINE AQUAPRO SILVER INFUSED BACTERIA CONTOL FILTERContains silver infused coconut shell activated carbon for reduction of chlorine and chemicals and bacteria controlQuick fit connectors not included with this item andif you need more we have them listed as item number 130861082062All our filters and systems have the relevant nsf.org, wqa.org or fda.gov quality standard approvalsAs mentioned earlier this item needs ¼”npt threaded to¼” tube [outside diameter is +/- 6mm] quick-fit connectors. You’ll need to apply 6-10 laps of plumbing tape on the threaded side of the fittings before use. Most people have a roll of plumbers tape on hand but if you don’t we sell a 15 meter roll on as item number 131310583559 and if you buy this item as well as the plumbing tape at the same time we will send them together. According to regulatory standards any water filter system under constant water pressure [regardless of the brand or supplier] is required to be fitted with an AS3497 approved pressure reducing valve and back-flow prevention device which we have listed separately as 111633967085 and we also recommend that a leak detector shut off device is installed with any water filter and / or reverse osmosis system which we have listed on its own as 121161074068  .