Nordson See-Flo 690 Meter-Mix 2-Part Dispense System, Used in R&D and not used in production, Like New, For applying precise beads or shots of difficult-to-handle abrasive or high-viscosity materials, SEE-FLO® 690 is the machine of choice, Apply precise beads or shots of difficult-to-handle abrasive or high-viscosity materials, Easily integrated with a production line, Hard Stop shot size adjustments are simple and dependable