Sterling 8mm Accessory Cord: Larger cords are best suited for prusik cords, cordelettes, ice threads, lightweight low-stretch fixing and hauling tag lines. Assorted colors, if you have a preference, please call for availability. Sold by the foot. Return Policy: Climbing equipment sales are final. In order to guarantee the life saving integrity of the climbing gear we sell -- theadventuresource.com cannot accept returns on any life safety climbing or mountaineering equipment.