This product is a set of 4 M8 anti vibration/shock mounting spacers.Screw: M8 x 20mm Male, M8 x 11mm FemaleRubber Damper: D30 x 25mmNote: This item is a lightly used surplus in good working condition. Affordably priced for hobby and DIY enthusiasts. Expect minor cosmetic flaws like small dents, scra..