FYI for posterity sake
The kickstarter and first prod batch of 2.1's
B4035: 1-1/2" Round / Flat Mount Dropouts, Hanger, Shimano 12 mm
http://www.paragonmachineworks.com/...-mount-dropouts-shimano-hanger-12-mm-hub.html
Update 10-1-2018
4035 replaced with: B4080: 1-1/2" Round, Flat and Low Mount Dropouts, Hanger, M12 x 1.5
http://www.paragonmachineworks.com/...shimano-hanger-no-nut-retainer-12-mm-hub.html
The kickstarter and first prod batch of 2.1's
B4035: 1-1/2" Round / Flat Mount Dropouts, Hanger, Shimano 12 mm
http://www.paragonmachineworks.com/...-mount-dropouts-shimano-hanger-12-mm-hub.html
Update 10-1-2018
4035 replaced with: B4080: 1-1/2" Round, Flat and Low Mount Dropouts, Hanger, M12 x 1.5
http://www.paragonmachineworks.com/...shimano-hanger-no-nut-retainer-12-mm-hub.html
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