The dual-sided cassette lockring tool works across Shimano, SRAM, and Campagnolo (for the roadies) components and weighs just 50 grams versus the 144-gram Abbey Crombie tool (made of steel) it’s clearly inspired by. Such weight savings inevitably do carry compromise and the tools are quite short in length and lack leverage compared to those found in many professional workshops. And then there are questions over the durability and strength of such tools if used on over-tightened or stuck parts.