Robinair's No. 40449 Replacement Lexan Handwheel Set is designed to replace damaged or missing handwheels on 2-Way Valves with 1/4 inch square drive valves. Set includes a pair of color coded hand wheels and screws. Blue - low side. Red - high side. Robinair, a Bosch Automotive Service Solutions brand, is a global leader in service tools and equipment based in Owatonna, Minnesota. Robinair is recognized throughout the world as the quality and performance leader in AC/R evacuation tools and this position has led to its success with the full range of products that serve the heating/ventilating/air conditioning/refrigeration (HVAC-R) and mobile markets.