BG-8 Screws & Fasteners Silicone Mount, Vibration Insulator with Spring for Vertical Vibration Damping, 6 to 16 Optimum Load (kg/4 Points), 10 to 8 Resonance Point (Hz), 18 to 16 Resonance Magnification (dB), 14 Hz Recommended Frequency, M-6 Bolt Diameter, BG Series