The Rockcentrics are brilliantly light, easy to use, offering plenty of placement options and come with a colour co-ordinated Dyneema sling that helps keep them firmly wedged once placed. Hex stoppers are light, easy-to-place choices for trad climbing Thin wall extrusion keeps each nut ultralight Tapered side profile eases cleaning Color coordinated Dyneema sling lightens up weight and secures placements Five sizes available 7075 aluminium alloy Colour coded anodizing