The Millet Diamond TRX Climbing Rope's 10. 2mm diameter and Anti Friction treatment are especially important for beginners. The larger diameter enhances control while belaying, and the Anti Friction treatment offers abrasion resistance against the rock. A durable TriAxiale braided core enhances longevity, and the middle marker helps you find the rope's center easier for a faster rappel. Most climbing ropes come with a specific uncoiling process, but the Diamond TRX's anti twist pack makes sure you can uncoil the rope without any harm placed on the rope.