Purchased new from a Montbell shop 5-8 years ago and has been stored in a warehouse unused. The rubber parts show no hydrolysis. Sold as a set of 2. These are I-type grip poles that are great for mountain climbing. They are lightweight and allow for lighter and more stable walking that moves with your arms. The lower shaft automatically locks when extended, and the twist lock allows for easy length adjustment with little force, enabling quick assembly and storage. The built-in spring (anti-shock) absorbs the impact when the pole hits the ground, reducing the burden on your arms and shoulders. Alpine Pole Anti-Shock duralumin 7001 [Usable Size] 105-130cm *This does not include the length of the point protector. [Storage Size] 64cm - Brand: mont-bell - Type: Trekking Pole - Grip Material: Rubber - Adjustment Function: Telescopic Thank you for viewing.