The Best Locking Carabiners
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Locking carabiners live at the most critical points of the system: your belay device, your rappel setup, and the master points of your anchors. They vary more than they look like they should. Screwgates are simple and glove-friendly, auto-locking gates remove the human error of forgetting to lock, and shapes range from large pear-shaped HMS lockers for belaying to compact D shapes that maximize strength for anchor building at minimal weight. We weighed gate security, how easily each locker opens and closes with one hand or cold fingers, resistance to cross-loading, keylock noses that will not snag, and weight for its size. Belayers should start with a dedicated HMS with some form of anti-cross-load feature, trad and multipitch climbers will want a handful of light compact lockers for anchors, and anyone who has ever found a screwgate vibrated open should give the auto-lockers a serious look.
BLACK DIAMOND RockLock Screwgate Locking Belay/Rappelling Carabiner, Black
A practical pick for this project.
PETZL Omni Screw-Lock Carabiner
A practical pick for this project.
#1A practical pick for this project.
- + A solid, well-reviewed pick
- + Good quality and everyday value
- + Practical for the job
- - Confirm the size or type you need
- - Check the material and details
#2A practical pick for this project.
- + A solid, well-reviewed pick
- + Good quality and everyday value
- + Practical for the job
- - Confirm the size or type you need
- - Check the material and details
#3A practical pick for this project.
- + A solid, well-reviewed pick
- + Good quality and everyday value
- + Practical for the job
- - Confirm the size or type you need
- - Check the material and details
#4A practical pick for this project.
- + A solid, well-reviewed pick
- + Good quality and everyday value
- + Practical for the job
- - Confirm the size or type you need
- - Check the material and details
#5A practical pick for this project.
- + A solid, well-reviewed pick
- + Good quality and everyday value
- + Practical for the job
- - Confirm the size or type you need
- - Check the material and details
#6A practical pick for this project.
- + A solid, well-reviewed pick
- + Good quality and everyday value
- + Practical for the job
- - Confirm the size or type you need
- - Check the material and details
#7A practical pick for this project.
- + A solid, well-reviewed pick
- + Good quality and everyday value
- + Practical for the job
- - Confirm the size or type you need
- - Check the material and details
#8A practical pick for this project.
- + A solid, well-reviewed pick
- + Good quality and everyday value
- + Practical for the job
- - Confirm the size or type you need
- - Check the material and details
Frequently asked questions
›What is the best choice among the best locking carabiners?
BLACK DIAMOND RockLock Screwgate Locking Belay/Rappelling Carabiner, Black is our top overall pick. A practical pick for this project.
›What is a good budget option?
PETZL Omni Screw-Lock Carabiner is the strongest low-cost pick in this guide. A practical pick for this project.
›How much should I expect to spend?
Picks in this guide span $ price bands (roughly: $ = under $30, $$ = $30–100, $$$ = over $100). We never display exact prices because they change constantly — the buttons above always show Amazon's current price.
›How were these products chosen?
Every product in this guide was individually researched on Amazon: we verify the exact listing, compare owner ratings and review volume, and write the pros and cons ourselves with small apartments and renters in mind. We earn a commission if you buy through our links, which never affects the ranking.
Last updated for 2026. Climbing Nest independently selects every product; we may earn a commission from links above.