Climbing Stop Descender for 9-12mm,Self-Braking Self Locking Belay Device Rescue Equipment Hand Controls with Mountain Climbing Cave Rappelling Aerial Work Rescue Activities (Black)

["GUARANTEED SAFETY: CE certified with a maximum weight limit of 330 lbs for 9-12 mm/0.35-0.47 inch diameter.","BRAKE ANTI-PANIC: The stop wheel and stop shaft can be stopped quickly and stay in place, convenient for users to descend and stop at an easy speed.","MATERIAL: aluminum magnesium alloy. Size: 2.17 inches (W) * 8.27 inches (L).","EASY TO INSTALL: The device can be quickly installed or removed from the rope without disconnecting it from the harness.","WIDELY USED: rock climbing, mountaineering, adventure, ice climbing, expansion, caving, rope descent, rescue, engineering protection, aerial work, etc."]