Tire Pressure Gauge Cover Protective rubber cover insures long service and continued accuracy of Moroso 2-5/8 Tire Pressure Gauges Specially designed ribs provide superior protection A must for anyone who uses Moroso gauge Nos. 89550, 89555, 89560 & 89570 or other 2-5/8 O.D. x 1-1/8 gauges NOTE: Not required for Moroso's Lighted Tire Pressure Gauges. Will not fit Pro Series or Digital tire gauges