LEKI Travel Wanderfreund Pole Super Lock System offers a secure adjustment hold with the least amount of torque to offer secure, reliable support Carbide Flextips are concave, cylindrical tips that provide a secure hold when Nordic walking off-road on all terrain and surfaces Rubber tip easily attaches and removes from carbide Flextip remove tip to expose carbide while on trails Carbide is extremely durable while the entire tip is replaceable.