Highly adhesive and durable, these brightly colored duct tapes are excellent for route-marking on climbing walls. They have great tensile strength, excellent tear characteristics, do not curl or twist during application, and do not fragment when being removed from climbing walls. These tapes are 11 mils in thickness, have 50 oz/in adhesion, tensile strength of 27-32 lbs/in, and a service temperature range up to 200F and are 1"x60-yd.