It's John Prolly's Volume Generator - http://prollyisnotprobably.com/2012/01/product_review_volume_generato.php
Looke like a lightweight version of the cutter
@O'Shane started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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It's John Prolly's Volume Generator - http://prollyisnotprobably.com/2012/01/product_review_volume_generato.php
Looke like a lightweight version of the cutter