300 Mini Pumps have yellow heads to distinguish them from other mini pumps Do not use these pumps in combination with any pump with a white head. Kit contains all of the parts required for metering Group Size A and B Resins and Hardeners. Additional parts required for Group Size C metering are INCLUDED in the 105-C Resin, 207-SC and 209-SC Hardener. 306 Model A Dispensing Pump is ideal for dispensing larger quantities of epoxy. Dispenses approximately 1/2 oz. of resin/hardener per pump stroke. Holds 1 gallon of resin and 1 quart of hardener. Pump will soon pay for itself by cutting mixing time and waste. The pump is complete with carrying handle. 309 High-Capacity Gear Pump: The home builder and professional alike will enjoy the efficiencies of this pump. The resin/hardener mixture is delivered with continuous rotation of the crank. Dispenses five quarts per minute, yet can dispense smaller quantities with partial crank rotation. Holds 2 gallons of resin and 1 gallon of hardener. Positive shut-off insures against resin and hardener loss and eliminates dripping spouts.