This is a homemade jigging machine for fishing from fences or boats. The mounting part is for thicknesses from 10mm to 85mm, so it cannot be used on wheel stops. The rod holder and clamp parts use new Daiichi Seiko Rod Holder Rod Keeper Rod Receiver Uketaro series (2,457 yen on Amazon). This product is not heavy-duty and cannot withstand large fish such as yellowtail or tuna. Also, it is not very wind-resistant, so a lure rod is the most suitable. The battery is 12V only. Please connect the positive and negative terminals correctly. Please note that this is handmade by an amateur, so it has many imperfections. Please refrain from purchasing if you are concerned about this.