Planet Bike Little A.R.S. Large Youth Railed Seat - White Gravel Bike This sprocket is compatible with

This sprocket is compatible with 1/2" x 3/32" chains and has a Narrow-Wide design that helps prevent chain derailment on multi-speed bikes

Body Material: Nylon

Neoprene and airprene main construction

They require you to run a Spline Drive Sprocket or Spider

Planet Bike Little A.R.S. Large Youth Railed Seat - White Gravel Bike This sprocket is compatible withPint sized cyclists deserve comfortable saddles too. The Little A. R. S. bike seats are smaller versions of Planet Bike's popular Anatomic Relief Saddle. They come in three sizes to fit 12" 24" wheeled bikes and they're scrappy enough to hold up to youthful exuberance. This is the largest of the 3 versions. It is white in color. *does not include seat guts. Foam padding relieves pressure on soft tissue Center recess for comfortable anatomic relief