Instant mounting and positioning on any part of the chain.
• Shortening in either chain direction; up-down.
• Designed to prevent inadvertent chain disengagement.
• Firm mounting with locking set on any desired part of the chain with one chain
direction open for shortening.
• Close-open function in both chain directions for safe retention of the chain.
• Can be set idle on the chain leg when shortening is not required.