• Designed for hands-free travel on 5/8" (16mm) rope • Automatically follows the user during both ascent and descent • In the event of a fall, the device "bites" the rope to arrest the user's fall • Equipped with a panic lock feature that engages even if the user mistakenly pushes the cam, ensuring the grab will lock • Supports a combined weight capacity of 130 to 310 lbs (60 to 141 kg), which includes the person, tools, and clothing • Meets or exceeds ANSI Z359.15 standards