This Product
DMM Rhino
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Petzl Attache
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Awards Top Pick Award Editors' Choice Award Best Buy Award  Top Pick Award 
Price $15.95 at REI$15.95 at Backcountry
Compare at 3 sellers
$11.95 at REI
Compare at 3 sellers
$18.95 at REI
Compare at 3 sellers
$14.95 at REI
Compare at 2 sellers
Overall Score Sort Icon
70
81
75
71
70
Star Rating
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Pros Simple design, very versatile, affordableVersatile, lightweight, relatively affordable, lots of gate clearance, gate security stripeVery light, affordable, visual indicator on screw gate, full-sized offset-DVersatile, great for use with double ropes and belaying, auto-locking gate mechanism, wide gate openingLight, small, least amount of revolutions needed for screwgate to lock or unlock
Cons Doesn’t prevent rotation with an ATC style belay device, a bit heavy, can be awkward on a gear loopScrewgate can get stuck closed, aluminum I-beam construction wears out quicker than someGate spring squeeks, less versatile than HMS styleHeavy and bulkyExpensive compared to alternatives, the least amount of gate clearance
Bottom Line Optimal for use with assisted braking belay devices, and highly versatile for other climbing purposesThe longtime standard as the best locker for all purposesOur Best Bang for the Buck winner due to its great price, but also its impressively lightweightA versatile and secure choice that is easy to handle and use, if a bit heavyThe lightest and easiest to use small locker
Rating Categories DMM Rhino Petzl Attache CAMP USA Photon Lock RockLock Twistlock DMM Phantom
Overall Utility (25%)
8
10
7
7
6
Ease Of Unlocking And Locking (25%)
7
7
8
8
8
Compactness And Weight (20%)
6
7
9
3
10
Gate Security (20%)
6
7
7
9
6
Gate Clearance (10%)
8
10
5
9
3
Specs DMM Rhino Petzl Attache CAMP USA Photon Lock RockLock Twistlock DMM Phantom
Weight 73 g 57 g 44 g 93 g 41 g
Gate Closed Strength (KN) 27 22 23 24 24
Sideways Strength (KN) 9 7 8 8 9
Gate Open Strength (KN) 7 6 9 8 9
Gate Clearance (cm) 2.2 cm 2.6 cm 1.8 cm 2.5 cm 1.6 cm
Visual Locking Indicator? No Yes Yes Autolocking No
Carabiner Shape Offset D/HMS Pear/HMS Offset-D Large Pear/HMS Offset-D
Lock Closure Type Triple action, double-action, or Screwgate Screw-lock Screwgate Twistlock Screwgate
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