Industry Nine Hydra 2 Classic Rear Hub - 12 x 148mm 6-Bolt XD Bronze 32H ModelNumber=MLEZ13 They have a 4 mm

They have a 4 mm hex socket and are 10 mm long so you can use a bash ring with your chainring that has threaded standoffs like our 104 BCD 30t ring

The rolling resistance of the slow wheels is increased using our patented ISR (internal speed reducer) that weighs only 10 grams

S18424 Category Combi Sole TURNAMIC® Speedmax Sole flex medium Weight / piece 510 g Fit Concept Race Fit Sizes EU 36–48 Specs per Fischer

and tighten again - simple

Industry Nine Hydra 2 Classic Rear Hub - 12 x 148mm 6-Bolt XD Bronze 32H ModelNumber=MLEZ13 They have a 4 mmRedesigned with scalloped hub flange to distribute stress loads Thicker axle and larger bearings throughout E bike compatible Hydra2 freehub mechanism improves over previous Hydra hub internals with larger pawl pockets and tougher metal for the drivering 6 pawl, 6 phase, with an extra tooth on the pawl for quicker . 41 deg between engagement points 6 bolt 44mm BCD International Standard disc mounting dimensions There can be color variations during