Universal: Rubber tips for trekking poles have a hole with a diameter of 11mm or 0.43in and are designed to fit most brands of trekking poles,walking poles,or hiking poles Prevent Slipping: These hiking stick tips can be used on hard surfaces liked paved trails, roads, sidewalks, or rocky terrain and feel the additional traction from the walking stick tips to help prevent slipping by using this rubber tips. Protects Poles: These cane tips protectors for alpenstocks prevent premature wearing of metal tips Added Metal Washers: Increase the lifespan of the rubber tips by adding an extra metal washer that prevents the tips of walking sticks from poking through the rubber. Provide Buffer:The cushioning effect of the rubber buffers of the TELEGLO crutch tips allows a long-lasting healthy pleasure for your sport, hiking, trekking, traveling, camping. Guaranteed Performance ：We stand by our replacement tips. If you’re not completely satisfied with these replacement walking staff tips let us know and we'll make it right!