Descriptions: _x000D_ 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. _x000D_ _x000D_ _x000D_ Features: _x000D_ These dampers are used for reducing stepper motor noise and vibration. _x000D_ Excellent anti-vibration dampers for quiet stepper motors. _x000D_ Suitable for CNC 3D printer stepper motor. _x000D_ These dampers are effective to reduce shock. _x000D_ These energy- absorbing rubber mounts with a metal mounting face. _x000D_ 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._x000D_ _x000D_ This item included 5 pcs dampers ,and made of high quality metal and rubber, durable in use. _x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material:metal, rubber _x000D_ Quantity: 5 _x000D_ Size: as the picture _x000D_ Hole diameter: 9.5mm/0.37inch_x000D_ _x000D_ Weight: 96g _x000D_ _x000D_ _x000D_ Package Included: _x000D_ 5 x Motor Vibration Damper _x000D_ _x000D_ _x000D_ Note: The style is random