Double Duty Gauging tapes have a chrome plated blade with a black strip along the bottom edge making it useful for working with both dark and light oils/liquids. They are also known as Chrome/Nubian tapes. The coating on the blade helps reduce the wear caused by harsh chemicals and tough working conditions. Complete tapes 75' length and shorter are housed in the small frame. Made in USA. Length: 1/2'' x 100'/30m (8ths front, mms back) Cross Reference: Lufkin # CN1296SMEF590