has anyone ever heard of these? I was digging around on Ebay for some loc line parts and came across these
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=281368424062&ssPageName=ADME:X:BOCOR:US:1123
they look small and sleek and very affordable, but seems too good to be true, not sure if it's worth taking a gamble on, I have never owned a dosing system so I dont really know what i'm looking for.