Izumi 410 Jb/S Key Ring bottom bracket socket Refractive Stability: Refractive degrees are

Refractive Stability: Refractive degrees are controlled within 3°

ROLLER BEARING CLUTCH™: Provides consistent chain tension

locking the insert in place and minimizing friction with fewer seams

Also included are 5mm diameter holes on the top and bottom for additional mounting options

Integrated braking performance

Izumi 410 Jb/S Key Ring bottom bracket socket Refractive Stability: Refractive degrees areProduct Overview There?? no better chain for the price than the hard working 410 series. Need extreme rust resistance? The 410TG?? special surface plating fends off the worst corrosion. It's a beautiful, hard wearing chain that can be matched to your frame, wheels, grips or saddle for extra style points. With a handful of different colour combinations including the signature Jet Black finish, there?? a 410 chain that?? perfect for any single speed