Performance Ropes Rock or ice. With unmatched durability, handling and reliability - anywhere you go - these ropes will not let you down. Helix 9.5 mmBlending the right features—the ease of the 9.5-diameter rope, durable and light with low impact force—the Helix is ideal for high-end sport, trad and mixed climbing. Buy Now Quest 9.6 mmA lightweight workhorse rope that is perfect for using across climbing disciplines.Buy Now Velocity 9.8 mmOur quintessential all-rounder, suited for both rock and ice, the Velocity is the flagship of our lineup: lightweight, durable, long-lasting and easy to handle.Buy Now VR9 9.8 mmThe VR9 is a 9.8 mm single dynamic rope for price-conscious climbers not looking to sacrifice the quality Sterling is known for. Buy Now