Jackson Safety Contour Wrap-A-Round Pipe Marking Tool (14752), Black, Medium, 3.88&rdquo; to 4&rsquo;, 1 / Case 1 Jackson Safety Medium Wrap-A-Round / Case; Black Made out of flexible gasket material, with good resistance to heat and cold Printed with a scale in inches, inch chart, tangent chart and other useful markings Economical tool for marking straight lines around pipe or for use of a straight edge