The Mastercool 36661 2-Valve Brass Manifold is constructed out of the finest materials and machined with precision in order to create a durable manifold set. The heavy-duty forged brass body and free-floating piston type valves which reduce O-ring wear both allow for a higher level of durability and a longer service life. The large, all-metal handles are angled for ease of operation. The hose holder provides the user with convenient storage for the refrigerant hoses.

The gauges are silicone-dampened in order to smooth out needle movement and provide the user with more accurate measurements. The gauges can be easily recalibrated in the field in order to maintain accuracy.