The SE Bikes One Piece Alloy Chainring combines the SE logo with a throwing star design in a bunch of eye-catching colors. These CNC machined chainrings are made of Alloy and work with standard 1/2" x 1/8" chains on cranks that have a 19mm spindle. These have 33T on them and are available in Silver, Anodized Red, Gold, Anodized Blue, and Painted Blue.