I have an Oregon 3/8 7T rim and sprocket that fits a Stihl 042 or a 048. The replacement rim is a Oregon 68210. I will not be able to use it, the insert that comes in the box is misleading. I contacted Oregon and they said it was an Canadian part number that is now obsolete and was given the correct information that I have included here. Its old stock with shelf grime and worn box but it is unused. I have $18 in it and will ship it states side for $18 or will trade for a 3/8 7t that will fit either of these saws a Stihl 440, 038, 660. The 029 I have is a .325 7t