The Black Diamond ATC Guide is the the most versatile ATC that Black Diamond manufactures. Two different sides offer two different methods of belay. One side is designed as a standard low friction belay which is useful for situations hampered by increased friction, like rappels. The teethed grooves on the other side offer 3 times the friction of a standard ATC for high-friction belays. The ATC Guide also has a guide mode that is capable of belaying one or two ascending or descending climbers while attached to an anchor point. The Black Diamond ATC is one of the most versatile ATC's on the market, and if you're interested in big wall climbing or multi-pitch climbs it's absolutely indispensable.
Multiple friction modes for belay and rappel
Guide mode works with one or two climbers ascending or descending
Durable cable holds its shape and resists getting caught between ropes
Machined windows through device for weight savings
Auto-block release hole enlarged to accept a small carabiner