TotalBoat 5:1 Epoxy Pumps Color coded pumps for TotalBoat 5:1 Epoxy Resin & Hardeners Color coded pumps dispense correct ratios. White pump is for resin. Black is for hardener Pumps available individually or in sets Calibrated pumps take the guesswork out of epoxy mix ratios Mix one full pump stroke of resin with one full pump stroke of hardener for an accurate 5 parts resin to 1 part hardener ratio