Descriptions: These dampers are used for reducing stepper motor noise and vibration. Excellent anti-vibration dampers for quiet stepper motors.This item included 5 pcs dampers, and made of high quality metal and rubber, durable in use. Features: These dampers are used for reducing stepper motor noise and vibration. Excellent anti-vibration dampers for quiet stepper motors. Suitable for CNC 3D printer stepper motor. These dampers are effective to reduce shock. These energy- absorbing rubber mounts with a metal mounting face. Stepper motors are affected by resonance. Resonance is caused by parts vibrating in concert with each other, which can be lessened by fitting a stepper motor anti-vibration damper. This item included 5 pcs dampers ,and made of high quality metal and rubber, durable in use. Specifications: Material:metal, rubber Quantity: 5 Size: as the picture Hole diameter: 9.5mm/0.37inch Weight: 96g Package Included: 5 x Motor Vibration Damper Note: The style is random 1These dampers are used for reducing stepper motor noise and vibration 2Excellent anti?vibration dampers for quiet stepper motors 3Suitable for CNC 3D printer stepper motor 4These dampers are effective to reduce shock 5These energy? absorbing rubber mounts with a metal mounting face