Dimensions: 3.88" x 4' | Pipe Diameter: 3" to 6" ,Service Temperature up to 288°C / 550°F ,Printed with a scale in inches, inch chart, tangent chart and other useful markings ,Made out of flexible gasket material with good resistance to heat and cold. Asbestos Free ,Economical welder and pipefitters lay out tool for marking straight lines around pipe or for use of a straight edge