Accessories for trekking poles (6 pieces) 1. Color: black 2. Material: rubber 3. Dimensions: The upper inner diameter is 11 mm, the upper outer diameter 17 mm and the lower outer diameter 24 mm. Non-slip and non-slip, wear-resistant tip 4. Give Extra Grip Use on hard surfaces of paved roads, roads, sidewalks or rocky terrain and feel extra traction from the tip to prevent slipping and improve stability 5. Protective strips and the environment These top protectors prevent the premature wear of metal tips and are also environmentally friendly, as they minimize the formation of scars and prevent environmental damage 6. Built-in metal washers Extend the life of the rubber head by adding an extra layer of metal to prevent the metal tip from penetrating the rubber