Our main goal is safety and function. Our Good Pen grips have the drive mechanism fully encased within the grip, this means no internal pen contamination which has been a long standing potential issue with pens until now. Enjoy the benefits of our fully adjustable ergonomic comfort grips with the peace of mind of zero cross contamination.
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First off, there’s nothing else out there like this really, so it’s tough to compare. They work exactly as they should. The adjustment gives a good positive click and is easy to adjust, but not sloppy and loose like some disposable adjustable tubes I’ve tried. I’ve gone through 60 of them so far. Two have had problems. Both of them there was some issue with the drive mechanism either binding or somehow not engaging. So that’s a 3% failure rate. Not too bad but it could be better. The cartridges I’ve used (Black Claw, FYT, Tat Soul, and Helios) have all fit perfectly and stayed positively locked in place without being too difficult to install or remove. Even after many repeated changes. I work progressively from one side of a piece to the other, so I change carts a LOT. My one and only issue with these is the environmental consequences. Biodegradable packaging and maybe making the grips from cork would go a long way to help with throwing a large chunk of plastic into the landfill.