Inferior clamps on a good product.
The switch doesn't match the picture which is fine. The vibration is perfect which is why the 2 stars. We are not happy with the clamps. Seeing thumb screws assumed the clamps were adjustable but they only serve to hold the clamps open which do not clamp tight in the first place and hang up when opening and closing them. Over all good potential with cheap poorly made clamps.
Rating: 2 stars