1 in Thick, Unslit NBR/PVC Pipe Insulation, 6 ft Insulation Length/ FABRICATION METHOD: EXPANDED INSULATION THICKNESS: 1.000 INCHES NOMINAL INSIDE DIAMETER: 0.625 INCHES NOMINAL LENGTH: 72.000 INCHES NOMINAL DESIGN FORM: FULL ROUND TEMP RATING: -297.0 DEG FAHRENHEIT MINIMUM AND 220.0 DEG FAHRENHEIT MAXIMUM SPECIAL FEATURES: NOMINAL TUBE/PIPE SIZE COPPER 1/2 IN.; NOMINAL TUBE/PIPE SIZE STEEL 3/8 IN.; COLOR IS BLACK FLEXIBILITY: FLEXIBLE MATERIAL: PLASTIC