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Petzl OK Screwlock
The Petzl OK Screwlock is a great carabiner for use with pulleys or for belays. The generous oval shape of the Petzl OK Screwlock enables for seamless use with pulleys, and as well as this symmetric shape being perfect for efficient belaying (regardless of which end is closest to the device). Lightweight with a secure keylock system, this is a great edition to your climbing kit.