The Lufkin PS1806DN Pro Series Ny-Clad Steel Surveying Tape Measure has a durable nylon coating on the blade that resists wear under extreme conditions. Lufkin Pro Series Ny-Clad steel surveying tape measures feature a super fast 3-to-1 blade retraction that saves time in the field, a Hi-Viz orange case that is easy to find on the job site and a steel blade that will not stretch under normal use.