![](https://s3images.coroflot.com/user_files/individual_files/539275_66hcbxsqfjqzj23e7awbpvhye.jpg)
The basic premiss of this product is to have a revolving blade (two blades in one knife). This is patented by Robbie Robertson (a very cool guy, a super friendly southern man with wonderful manners). The feature Drew and I invented for this product refresh is the sharpener + sharpener retention method.
![](https://s3images.coroflot.com/user_files/individual_files/539275_rtwwlbocuxbhzfl7fot3p_6c7.jpg)
The sharpener is securely attached with a hidden magnet. No matter how hard you shake it, this combination of geometry and a magnet hold the sharpener perfectly immobile.
![](https://s3images.coroflot.com/user_files/individual_files/539275_2tdknhpdh2onllnmtwl__hn4r.jpg)
Push down on the ball and this tips the sharpener over an internal pivot point which then peals it away from the magnet.
![](https://s3images.coroflot.com/user_files/individual_files/539275_ytmcjbknuwqomhcxud5xjddzs.jpg)
Once the magnet's force is reduced then the user can slide the sharpener free from the restricting geometry.
![](https://s3images.coroflot.com/user_files/individual_files/539275_fxznluucxdjwllnm8fak3oj_x.jpg)
And voila! The sharpener is free to use.
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