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I have been using the original 9 - and then the co-working since the kickstarter. you need to be mindful not to leave bits lying around in the grass - it goes without saying - but the quality of the fit in the screw broach, the access to *all* the screws needed on a bike, excellent magnet retention, high torque rating and the additional tools all wrapped up in a take along/not notice/super light weight package is the best I have used. I have a vested interest in 'functional minimalism' and have tools from PB Swiss, wolf tooth, Spur cycle...