Review on HOTSYSTEM DC12V 20A Round Rocker Toggle Switch ON-Off SPST LED Illuminated 3Pin Triangle Plug Car Motorcycle Boat Marine Truck Trailer Auto Green 5-Pack by John Thawngzauk

Bought these to install in my boat as a main cut off to my stereo.but you just want to know other details. This will fit snug in a 3/4 inch hole. The pins or tabs in the back are labeled so you know which wire goes where.it's there but microscopically printed on the plastic, my eyes 5uck and I'm surprised I noticed it ( +), (A= for thing you want to power), (ground). These are designed to light when in the on position as most switches but I've seen you tube vids where you can wire them to stay lit.probably not a good idea.I drilled 3/4 inch holes into plywood to see if these would snap in material as thick as 1/4 inch and they did nicely. Be aware that the lip of these switches that cover the face of the hole is very small.not much room for error. The hole should be a clean 3/4.The snap in tabs and overall plastic material was durable enough for me to snap in and pull out several times as I was saying wow not bad at all :)