LEKI Nordic Walking NW Spin Poles Super Lock System offers a secure adjustment hold with the least amount of torque to offer secure, reliable support Rubber Fitness Lite tips are specially designed to provide traction on pavement and smooth surfaces Carbide Flextips are concave, cylindrical tips that provide a secure hold when Nordic walking off-road on all terrain and surfaces The unique +/-5-cm adjustment range of the Speed Pacer Vario requires that you order poles to your size A smaller, compact tip size reduces weight at the end of the pole while enhancing swing weight Carbide is extremely durable while the entire tip is replaceable.