Enduro 1-3/8" 45 x 45 Degree Stainless Steel Angular Contact Bearing, 37mm ID x 49mm OD x 7mm mei which means better traction

which means better traction

Features at least five one-tooth jumps for a smoother gear progression

to enhance and protect the frame

K-Shield (KS) is a layer of light

Continental Race King C256 SL 29*2

Enduro 1-3/8" 45 x 45 Degree Stainless Steel Angular Contact Bearing, 37mm ID x 49mm OD x 7mm mei which means better tractionEnduro Angular Contact bearings engage all of the bearing's balls to spread the force over a larger surface area, minimizing wear and increasing bearing life. This is particularly important in applications like BBs, where there are constantly changing lateral loads on the bearings, which is typically the primary cause for premature bottom bracket bearing failure. 440C stainless steel bearings offer high corrosion resistance for adverse riding