The stans notubes the injector 2oz tool the notubes posh syringe works with 2 part presta valves with a removeable valve core the sealant applicator screws onto the valve ideally with the valve core removed and allows easy and measured injection of sealant it can also be used for removal of sealant from tyres saving waste of tyre sealant when switching to new tyres stans notubes the injector 2oz tool features makes application of sealant quick and easy minimizes waste and mess of