Pulsafeeder KOPkit K4KTC3 Electronic Metering Pump Repair Kit head size 4. BRAND NEW UNOPENED WAREHOUSE SHELF STOCK. This item is in the category "Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Metering & Dosing Pumps". The seller is "powerindustrialsales" and is located in this country: US. This item can be shipped worldwide.