Is your AEG SE12-180 sander starting to spark, lose power, or not run smoothly? Chances are, the carbon brushes are worn out. These are the exact replacement brushes you need to get it running like new again. The dimensions are 5mm wide by 10mm thick by 16mm long (that's about 2.0 x 3.9 x 6.3 inches). They're the part that makes electrical contact with the motor's armature, and over time they just wear down from use. Replacing them is usually a simple fix—often you can just pop off a cover on the sander, swap out the old brushes for these new ones, and you're back in business. It's a way cheaper fix than buying a whole new tool. Keep your trusty sander alive and avoid the hassle of shopping for a new one. Just make sure your sander model is the AEG SE12-180 before ordering!