A solid built steel frame, it will last forever! There is nothing more to say.
Length of seat tube: 170mm
Material: Nimbus tubular steel
Inside diameter seat tube: 25.4mm (seat post diameter)
Outside diameter seat tube: 28.6mm (clamp inside diameter)
Diameter Bearing holder: 42mm (bearing outside diameter)
Bearing pitch: 100mm (center bearing to center bearing)
Weight: 810g (incl. bearing holders and bolts)
Max Tire Size: 3.0"
Comes with: bearing housing, screws and double bolt seat clamp