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London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
DethBeard
https://www.walmart.com/ip/Shape-Shifting-Box-Hellraiser-Puzzle-Box-Lemarchand-Solid-Wood-Lament-Le-Marchant-Props-Cube/372616695
Walmart markets the lament configuration as a STEM toy