All the chainrings we sell are for 110 x 74mm bolt circle diameter cranks.  This size is now popular with old mt bikes and many new road bikes alike. 

Rings are either made by Sugino (in Japan) or Vuelta (in USA).  All are silver with no ramps or weird shaped teeth or pins.  Absolutely nothing fancy about these rings.  Plain and simple looking rings at very good prices.  If you need something special looking then look elsewhere.

They sometimes differ in shape. So, if you are particular about the shape of your rings, or them matching, give us a call to ask about them.

Here's a neato tool to keep that chainring nut from spinning round and round.