For metering larger quantities of 105 Resin and 205 or 206 (5:1 ratio) Hardeners. Reduces mixing time and waste on large projects. Carry handle allows you to move the pump where the work is. Reservoirs hold one gallon of resin, one quart of hardener. Dispenses approximately 0.5 fl oz of resin/hardener per pump stroke (about 1 qt per minute). Can be converted to a 3:1 ratio.Rebuild Kit (306KIT): Includes: seals, balls, gaskets, springs, high-rise tubes with ferrules, new resin and hardener reservoirs with lids.