This knotted climbing rope features a high-grade steel clamp system and knots spaced every 16" so beginners can learn how to climb rope safely and avoid rope burn. One of the most efficient tools to enhance total body fitness and build power, rope climbs help climbers of all levels take their fitness to new heights. This super high strength knotted climbing rope is sealed at the end and features a high-grade steel clamp system. Constructed from Grade A Manila fibers High-grade steel clamp system Extended handles with 3M™ Military Grade heat shrink caps Knots spaced every 16" Weather resistant and water proof Perfect for indoor or outdoor use Hand-crafted in the United States 1.5" diameter Rope lengths begin at 10' and go up to 50'