16" Kids Coaster brake wheel. Could be a nice upgrade with the alloy rim to save some weight. This will fit most bikes that use a tire ranging from 1.75 to 2.125. The coaster brake means the brakes are applied while pedaling backwards.Item Specifications: Wheel Size: 16", Rim Material: Hole, Spoke Count: 28 Hole, Spoke Type: 14G Galvanized Spokes, Axle Size/Type: 3/8 Bolt On, Axle Spacing: 110mm, Valve Type: Schrader Valve, Cassette Body Type: Single Cog Driver, Inner Rim Width: 19mm, Brake Type: Coaster w/18T cog, Tubeless Compatible: No,