BLACK DIAMOND RockLock Screwgate or Twistlock Carabiner | Hot-Forged, Lightweight | Keylock Nose | Secure Locking Biner for Belaying & Rappelling

Our largest locking carabiner, the RockLock Screwgate is perfect for belaying, rappelling or anchors, and now features hot-forged lightweight construction, a redesigned spine for better handling, and a larger rope-bearing surface for greater durability.

• 100% Synthetic
• Made in the USA
• LARGE, SECURE DESIGN: The RockLock is Black Diamond’s largest locking carabiner, perfect for belaying, rappelling, and anchor systems. Its spacious HMS shape accommodates knots and belay devices with ease.
• KEYLOCK NOSE FOR SNAG-FREE USE: Prevents rope or gear snags when clipping or unclipping. Smooth operation ensures fast, reliable handling during belays, anchors, and gear organization.
• KEYLOCK NOSE FOR SNAG-FREE USE: Prevents rope or gear snags when clipping or unclipping. Smooth operation ensures fast, reliable handling during belays, anchors, and gear organization.
• EASY ONE-HANDED OPERATION: Ergonomic spine and screwgate design make it simple to operate, even with gloves on. Works well with ATC-style belay devices and Munter hitches for versatile use.
• VERSATILE FOR CLIMBING & SAFETY: Designed for rock climbing, mountaineering, and rescue applications where a secure, large-capacity locking carabiner is needed. Dependable strength and smooth handling in all conditions.