Durable and Reliable Tree Climbing Spikes. Experience secure and reliable tree climbing with our durable climbing spurs. Crafted from Q609D steel and rigorously tested to meet ASTM-F887 standards, these spurs can handle up to 350 lbs., ensuring stability and safety during your climb. The comprehensive set comes with a harness, climbing spikes, adjustable hook-and-loop straps, and a utility rope for enhanced protection. Designed for comfort, the EVA padding and contoured thigh plates reduce strain during prolonged use, while the forged, heat-treated spikes provide a strong grip on tree surfaces. Durable Steel Construction, Comprehensive Kit for Tree Climbing, Designed for a snug and cozy experience, Robust and Long-Lasting Spikes, Height can be customized to suit your needs.