Deluxe Tank Pressure Checker for Scuba Yoke Valve by Thermo Cascade (CV360) Quick & Accurate Check / Test of Scuba Tank Pressure Rubber Protective Boot on Easy-Read Gauge Attached to Yoke Style Scuba Valves Easy-Grip 1" Diameter Twist Bleed High Quality Glycerine Filled 0-5000 psi / 0-350 bar Dual Read Gauge