(Pkg 4) "Soft" Rubber Anti Vibration Damping Ball/Shock Absorber for Gimbal Mount

Universal vibration damping balls designed to be used for gimbal isolation or shock mounting sensitive electronics. Size is 25mm tall and features one 20mm diameter x 3mm thick flange and one 19mm diameter x 2mm thick flange that each taper to 14mm diameter (where the flange meets the body of the ball). 9mm diameter hole through the center. Damping ball is 23mm diameter at center. Isolation rating is unknown. This one is "soft" (it can be easily compressed between your fingers). Sold in a package of 4.