Non-flutter gauge. Rugged chrome metal housing. Anodized aluminum block body. 8' black non-permeating hoses with manual couplers. Collector's Edition tin case This 2 piston manifold with 1/2" ACME fittings also features front calibration access port, easy to grab large chrome knobs and Triple Seal valve with three o-ring design. The Blackmax is designed for perfect function and long life, and also for its looks. Most technicians like good looking quality products that improve their tool box. Includes Spider protective gauge boots.