The holes in this cut off switch are made for 3/8" bolts.
Installation: Remove your negative battery cable, install the disconnect on the negative battery terminal with the bolt provided and then re-attach the vehicle's cable to the threaded terminal of the disconnect. To break the connection from the vehicle to the battery just unscrew the knob until it loosens up. It would be a good idea to open a door-etc to confirm that the battery is unhooked from the vehicle (no lights come on-etc.) Wear safety glasses during the install.
The item was of good quality, I received it promptly, and it was easy to install.
Okay is all I. Can say about this product. Does the job, but a cheaply made product.
I would suggest spending more for a quality item.
Quick delivery, good quality, exactly as described. I modified the ends of the switch to be used with a motorcycle battery that has 6 mm X 1.00 bolts. I modified one for my Trike and another of a buddy's two wheeler. Exactly what we needed and wanted. An easy way to completely remove our Odyssey batteries from any parasitic drain when sitting.
The Great thing about it works and does what it was made for.
could not use the negative side no room. seems to work okay
Excellent if you don't use your vehicle often or have a very slow drain on your battery. Simple installation even if you aren't mechanical. Took less than 2 minutes. Works great.