Bearing style / amount: Features chromed steel bearings with triple freehub bearing axle support

either works

Composite smart shear screws

Engagement: Simultaneous 6 pawl engagement provides 36 points of contact with 10-degree engagement

it also has the side effect of fatiguing the rider

Park IB-1 I-Beam Mini Fold Up Allen Key Wrench and Screwdriver PDP|PLP|Brake Rotor Type Bearing style / amount: FeaturesThe Park Tool IB 1 is a compact, lightweight fold up tool that you can easily stash in a jersey pocket and use for trailside adjustments. It uses Park's unique I Beam handle for strength and durability. The I Beam IB 1 includes: 3, 4, 5, 6 and 8mm hex wrenches Flat blade screwdriver The Park Tool I Beam weighs just 91g and measures 75mm x 30mm x 17mm.