Black Diamond ATC-Alpine Guide

The ATC-Alpine Guide from Black Diamond is a compact belay and rappel device made for sport climbing, indoor walls and alpine adventures. It serves as a reliable tool for managing rope friction whether you’re setting up a top-rope, belaying a partner or controlling your descent.

Constructed entirely of aluminum, this device keeps its weight down to just 73 grams without sacrificing durability. Its simple tubular design works smoothly with a range of techniques, and its compatibility with ropes between 6.9 and 9 mm in diameter means you can pair it with lightweight alpine lines or standard single ropes for everyday crags.

The specified rope diameter range refers to the thickness of rope the device can grip effectively. Thinner ropes around 6.9 mm save weight on alpine routes but produce less natural friction, so they demand attentive braking, while ropes up to 9 mm generate more resistance for easier rope handling and catch.