EK-Vardar X3M Damper Pack Green is a 4-piece colored rubber corner pack that is mounted on EK-Vardar X3M fans. These anti-vibration rubber mounts are used to reduce vibration transfer to the rest of the PC.These rubber corners are compatible only with the EK-Vardar X3M fans and are screwed in by 3mm Allen supplied with the fan itself. Inside the rubber corners, there is a plastic insert making sure perfect mounting is achieved and rubber is not squished too much.Enclosed:- EK-Vardar X3M damper x4