This is a conversion kit for the folks that already have two of our 4 oz injectors. This kit contains everything you need, plus the tool, to assemble your own dual injector system. . Super smooth action. This is a really slick set up.
 
NOTE: Does not include injectors

Please note: This injector does not use a locking pin to hold the nozzle on.  Additional care and awareness should be used when using it.