WEST SYSTEM PUMP SET 303 (3:1 RATIO) - Pump for 1.33 ltr Resin & Hardener Set is backordered and will ship as soon as it is back in stock.
303 Special Ratio Pumps are calibrated to deliver the working ratio of 3 parts of 105 resin to 1 part of either 207 Special Coating or 209 Super Slow hardeners, with one full pump stroke of resin for each one full pump stroke of hardener.
