Theory Trusty Seat Post Clamp - 31.8mm (1-1/4") - Purple 150mm The rear is a flip-flop

The rear is a flip-flop which will work with most any 13t or larger freewheel (not included)

Size: 12 x 2

4130 chromolly 3/8 inch axle

High-density gel padding relieves pressure points

The Devo 12 is an easy choice for your kid’s first bike at a price that’s just right

Theory Trusty Seat Post Clamp - 31.8mm (1-1/4") - Purple 150mm The rear is a flip-flopConstructed with durable 6061 aluminum, this seat post clamp boasts a secure single bolt on design for a "trusty", classic design. Size: 31. 8mm (1 1 4") Color: Purple Note: This part was colored by anodizing, which is a method of coloring metal. Color differences do occur among manufacturers and even among batches from the same manufacturer. This is not a flaw or imperfection, but it is inherent to the anodizing process. We make every effort to show