Eccentric Bottom Bracket (EBB) is often seen on internal gear or single speed systems. By rotating the EBB, you can change the distance from BB center to rear axle. As a result, you can tension the chain or belt without a rear derailleur or tensioner.
To help professional bike shops or internal gear / single speed bike fans adjust the EBB more conveniently, we develop this special tool.
100% match the Blacksnow EBB frameset, made of stainless steel.
Made by stainless steel
100% match Blacksnow EBB frameset