Sealey air conditioning system manifold with sight glass sealey vsac002 test for variations in high and low pressure sides of vehicle air conditioning systems suitable for r134a and r12 applications lightweight aluminium block design with sight glass and easy to read large anti flutter gauges professional service couplers colour coded and labelled three colour coded charging hoses and a hanging hook to allow hands free use sealey vsac002 air conditioning system manifold with sight glas