This Purple Ferrule measures 16mm in diameter and is an excellent safety device that is compatible with walking sticks and crutches.It is made of rubber with a steel insert for exceptional levels of durability but it also provides incredible grip and stability vastly minimising the risk of falls and accidents. It is easy to fit on the end of a mobility aid and is highly cost effective. This Purple Ferrule is one in a range of high quality Ossenberg ferrules that can be found in this section of the shop.