You shouldn't have to attach your Vertex Spinner to your work bench. They don't vibrate, jump and shake like a Donkee Spinner does. Only a Donkee Spinner needs to be fastened down. My Vertex Spinner is 5 years old and I have never had a walking/vibration problem with it.
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"Whenever I feel the urge to exercise I lie down until the feeling passes away."
Brick