Rare 28.mm DoubleQuick clamp in blue. Only 1 left in stock
Nimbus Double Quick Release Bolt Clamp.
Clamp is made to fit 25.4mm seat posts.
Clamp’s actual internal size is 28.6mm.
Aluminum body clamps with two steel bolts for extra clamping power! power! power!
A 22.2mm seat post uses a 25.4mm clamp.
A 25.4mm seat post uses a 28.6mm clamp.
A 27.2mm seat post uses a 31.8mm clamp.
Some Eclipse and Equinox frames need a 34.9mm clamp
These are a rule of thumb. Yet, variety exists.