BC bindings are popular for backcountry skiing and are available in three options: BC Auto, BC Manual, and BC Magnum. All three bindings have a metal-toe pin with a 37mm width, but they differ in their locking mechanisms and level of resistance. BC Auto is the simplest, requiring no hands to lock in, but can freeze and requires two hands to release. BC Manual is the best-selling binding, with a lever-operated locking mechanism that is resistant to icing and dependable, and can be released with one hand. BC Magnum is the most solid and stable, recommended for wider skis and can be driven quite hard with the right shoe. The resistance level can also be customized with a rubber flexor block mounted against the toe of the boot.