Handmade pickup for a double bass. This type attaches to the feet of the bridge. Since the element is high-gain, I think it would be good to use it with a preamp or something to dial it down. The sound changes depending on the mounting position and tightness, but personally, I thought the practical tone was best when it was attached around the middle of the foot, next to the wing part, with the torque just enough to avoid noise. I think you should be careful as it's likely to scratch the bridge. I think it would be good to use a small piece of wood or something as a buffer. It can be attached and removed quickly, so it's good for those needs. Two 50-gram weights are included. https://youtube.com/shorts/NpSpn0nLvTc?si=utKB_908D5Cu7OS1