Bolt (climbing)

Not to be confused with Rock bolt.
Dynamic rope clipped into a quickdraw, that is clipped to a bolt hanger, which is attached to a fixed bolt.

In rock climbing, a bolt is a permanent anchor fixed into a hole drilled in the rock as a form of climbing protection. Most bolts are either self-anchoring expansion bolts or fixed in place with liquid resin. Climbing routes that are bolted are known as sport climbs, and those that do not use (or allow) bolts, are known as traditional climbs.