Wild Country Synergy Review
Cons: Gate takes many spins, small gate clearance.
Manufacturer: Wild Country
Our Analysis and Test Results
This has one of the smoothest gates we tested. With practice (and while the carabiner is new) you can close the gate with just one spin. The key-lock gate is easy to unclip from webbing. It has a nice, medium size which along with the I-beam design makes it easy to handle (you don't feel like you are going to drop it). Fortunately, the spine gets smooth at the end of carabiner so that rope runs smoothly when belaying or rappelling. It is light for its size and is two grams lighter than the slightly smaller Petzl Attache. It scored well for clipping multiple knots and slings due to its large bottom.
Even though the gate is incredibly smooth, it does take a lot of turns to close. This means that unless you get it just right and close it on one go, it can take a few tries to close. When opening the gate there is not a lot of clearance. This means it's not great at anchors if you want to clip lots of ropes in. It scored just slightly worse than other carabiners in its class. But the difference was small so you may not notice it.
This is a good belay carabiner for anywhere: gym, multi-pitch, sport climbing.
This biner is a solid value. Only the Mad Rock and Metolius Element are less expensive for a similar carabiner.
— Chris McNamara and Chris Summit