Brooks Leather Ring Grips VEGETABLE TANNED LEATHER- Brooks uses only the finest European vegetable tanned leather for their grips, saddles and accessories. RECYCLED MATERIALS- Each of the leather washers that make up the grip comes from the byproducts of the Brooks Saddle manufacturing. ADJUSTABLE- The leather sockets are held together by three adjustable spokes. INTERCHANGEABLE- the standard grip length is 130mm but each grip comes with shorter, 80mm spokes to make them even shorter if wanted. LIGHTWEIGHT CONSTRUCTION- The frame of the grip is made of lightweight aluminum, giving you the perfect blend of weight saving and durability.