Samson’s ArborMaster is an industry standard. Whether you’re talking training or choosing a climbing line, ArborMaster is second-to-none. This line is the culmination of Samson’s long-standing partnership between the rigging experts of ArborMaster Training and Samson’s innovative design engineers. ArborMaster is a durable 16-strand line that offers the maximum firmness for all climbing techniques. Its 1/2-inch diameter provides an easy grip and has low stretch and excellent knot-heat resistance. ArborMaster is spliceable at both ends without milking and comes in three high-visibility colors: Red/Black/White, GoldStreak, and BlueStreak.