The parts are all after market not a Stihl brand but they are a good working and they do the job well. The nut on the roller might not stay tight so I always use locktite on the threads so it stays there. In the photo's there is a small clip don't loose it they can really fly when putting them on we also take photo's of each package to be sure it's there don't ask for one I will not be able to help you with this. That's it and you should be ready to go. The item "Stihl chain saw chain chacher roller dog hardware 661 660 461 460 362 361" is in sale since Wednesday, February 14, 2018.This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Chainsaw Parts & Accs". The seller is "pf65skate" and is located in Elkhart, Indiana. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Viet nam.