Is your Silverline SL7 edger or tool not running smoothly, sparking, or just dead? Chances are the carbon brushes are worn out. This set gives you two brand new replacement brushes to get it spinning like new again. The model is SL7, and these are unbranded but made in the USA to fit. They come new in packaging. Carbon brushes are those little blocks that transfer electricity to the motor's spinning part – they wear down over time and need replacing. It's a super common and easy fix that can save you from buying a whole new tool. Usually just involves unscrewing a cover, popping out the old worn brushes, and sliding these new ones in. If you're handy at all, you can do this in 10 minutes. Bring that old Silverline edger back to life for a fraction of the cost. Keep your tools running and save money – it's a no-brainer repair!