Sea Hawk "Hawk Epoxy" Pump Kit is for accurately measuring Resin to Catalyst ratio. This kit contains one R1 Resin pump, one C2 & C3 Catalyst pump and one C1 & C5 Catalyst pump. The Hawk Pump Kit User Manual explains how to use the pumps for accurate measuring, how to prime the pumps, pump cleaning and storage, and how to use the pumps with various Hawk Epoxy System Sizes.