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Bygen's Hank Direct Bike direct-drive levers [1] It seems it's value is that it's for folding bikes, maybe first crank system for folding bikes. 95.178.222.9 ( talk) 02:14, 23 April 2020 (UTC) reply

Folding bikes are nothing new, so clearly this is not the "first crank system for folding bikes". Treadle bikes are nothing new. There's a good reason treadle bikes (like direct drive bikes) are so rare. They are just less efficient. Meters ( talk) 09:01, 23 April 2020 (UTC) reply