This Nimbus II 20" frame in Chrome features a flat top to place your foot and comes with matching split 42mm bearing housings. The frame fits tires up to 20 x 2.5".
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: 770g (incl. bearing holders and bolts)
Comes with: bearing housing, screws.