Full specification
8 rowsThe Black Diamond RockLock is a dependable, no-frills screwgate locking carabiner that excels as a belay or anchor biner thanks to its oversized basket and keylock nose. It's not the lightest option on the market, but its durability, smooth action, and affordable price make it a staple piece of gear for gym climbers, sport climbers, and trad leaders alike.
Black Diamond RockLock Screwgate Carabiner on the rock
The Black Diamond RockLock Carabiner is a robust locking carabiner engineered for climbers who need dependable security at critical points in their system. Its oversized, symmetrical design features a large basket that easily accommodates multiple ropes, slings, and belay devices, making it a favorite for belaying, rappelling, and anchor building. The auto-locking mechanism, whether in the screwgate or twist-lock version, ensures the gate cannot be accidentally left open, adding a crucial layer of safety during high-stakes climbing situations. Constructed from durable aluminum, this carabiner strikes a balance between strength and manageable weight, making it a staple piece of gear for both sport and traditional climbers.
Designed with user-friendliness in mind, the RockLock's oval shape allows for smooth rope movement, reducing friction and wear during belay transitions or when lowering a climbing partner. The locking gate mechanism is simple to operate even with gloved hands, an essential feature for climbers braving cold alpine environments. Its keylock nose design prevents snagging on gear or rope, ensuring quick and hassle-free clipping and unclipping, which can be vital when time and precision matter most, such as during multi-pitch climbs or emergency situations.
Built to withstand the rigors of demanding rock climbing environments, the Black Diamond RockLock Carabiner meets stringent CE and UIAA safety standards, giving climbers confidence in its reliability under load. Its versatility extends beyond climbing, proving useful for canyoneering, mountaineering, and industrial rope access work where a secure, heavy-duty locking carabiner is essential. Compact enough to clip onto a harness without added bulk, yet strong enough to handle significant loads, the RockLock exemplifies Black Diamond's commitment to producing gear that climbers can trust with their lives, session after session, route after route.
Where it sits in the Belay & Hardware field
Against the other 19 belay & hardware pieces on the bench, this one lands at #44 overall with a bench score of 82. Its strongest axis is build quality; its weakest is weight saving, which is where the closest alternatives listed alongside make up ground.
Strengths, trade-offs and features
5 strengths against 4 trade-offs recorded during testing, plus the 5 features that define this piece.
What works
What to weigh up
Key features
Four more from Belay & Hardware
Closest scoring alternatives we have run through the same five axes.
