Have used KMC, SRAM and shimano dura ace chains, MTB and Road, works excatly like it says, makes popping a quick-link off and on simple and fast. After I wore out a KMC chain way too quickly (less than 1,000 miles...), went back to shimnano dura-ace and it works great on these too. Very hard plastic or nylon (ABS?) with what feels like a steel core, won't bend or break! Works great as tire levers too! Very happy with this, saw a friend use their's and knew I had to get one. BTW, only place I could find this was here at WB.
This is a handy tool for undoing quick-connector links if you want to remove your chain for cleaninglube and reuse. It also does double duty with two very sturdy tire levers, the plastic is a lot denser than you'll find on cheaper levers.
Little on the thicker then I expected.
Takes up space in the saddlebag. But it double as the tire leavers so, it makes up for it. Havent had chance to use it on the road yet.