The OK Screw Lock Carabiner by Petzl is a compact, lightweight, manual locking, symmetric carabiner. The easy to use Screw-Lock was designed for use with pulleys and hauling systems. The red band indicates when the 'biner is unlocked to keep you climbing confidently. This device is perfect for sport climbing or mountaineering in dirty environments where dust and dirt cause an automatic locking mechanism to malfunction. The pear shape facilitates use with the Munter hitch for single ropes. Try not to think about the pear shape too much, it might make you hungry.
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