TNT Derringer Sealed BMX Flip/Flop Freewheel Hubset - 28h - 3/8" - Blue 20" (406mm) works with 20x1

works with 20x1

This is a case of 50  20" x 1

Length: approx 15

It will work with 3/32" chains and is anodized gold

The Profile Gun Drilled Hollow (GDH) 19mm 48 spline crank axle is a great way to take a large chunk of weight off of your bike without sacrificing a great deal of durability

TNT Derringer Sealed BMX Flip/Flop Freewheel Hubset - 28h - 3/8" - Blue 20" (406mm) works with 20x1This set of TNT BMX Derringer Hubs is 28 hole small flange, flip flop, sealed cartridge bearing aluminum hubs. These will work with single speed thread on freewheels that are 13t and larger. The one side is threaded 30mm x 1 and the other side is threaded 1. 37 x 24. The OLD is 100mm front and 110mm rear, and the axles are 3 8". hub shell is manufactured from high quality aircraft quality aluminum sealed bearings 4130 chromolly 3 8 inch axle aluminum