The Ideal 31 066 is a 120 blued steel Tuff Grip Pro fish tape. This fish tape is a laser etched in 12 increments to provide instant conduit length, its unique finish in non oily and resists rust. Made of the highest grade carbon steel, this tape is the industry s strongest wire, and it remains stiffer during longer runs. With a maximum tensile strength of 1,600 lbs. gives this tape a lot of flexibility in usage.