Durable and Reliable Tree Climbing Spikes. Experience secure and reliable tree climbing with our durable climbing spurs. Constructed from robust 42CRMO steel and tested to meet ASTM-F887 standards, these spurs can support up to 350 lbs., ensuring stability during your climb. The set comes with everything you need, including a harness, climbing spikes, hook-and-loop straps, a utility rope, and a spike protector for added safety. Designed for comfort, the spurs feature soft EVA padding and ergonomically molded thigh plates, while the heat-treated, forged spikes provide a strong grip on tree surfaces. Durable and Robust Construction, Comprehensive Kit for Tree Climbing, Designed for a snug and cozy fit, ensuring optimal comfort during use, Robust and Long-Lasting Spikes, Customizable Height.