SINANO SINANO Tip Rubber PP-25 The non-slip tip rubber (PP-25) combines a hoop-shaped stopper on the upper part of the conventional tip rubber. This stopper catches and completely prevents the tip rubber from falling off the trekking pole. Color: Black Material: Synthetic rubber Insertion diameter: φ11mm Sales unit: 1 piece Although it is new and unopened, the package condition is not very good because it was stored as a spare.