PAUL Melvin chain tensioner

A chain tensioner that can convert traditional vertical dropouts into a single-speed bike. The double-pulley structure also allows for a two-speed front conversion. The pulleys themselves are machined from aluminum and use sealed bearings to increase durability. The pulley thickness is 2.25mm, making it compatible with most narrow chains, and it can, of course, be used sufficiently with 1/8" single-speed chains. MADE IN USA
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