Check the listing for details. Lot 3 Small Electronic Switch Locks with Mounting Nuts, Keyed Alike, Electrical. Condition: New. Listed at 9.99 USD. 2544XF3F.07 New Miniature Electrical or Electronics Switch Locks, Keyed Alike, With Mounting Nut and Keys, Part Number & Manufacturer Unknown. Each bid quantity is for a Lot of Three (3) Locks, Three (3) Mounting Nuts, and Six (6) Keys. You may bid / buy any number of lots, up to the total quantity available above. These were purchased at an electronics supplier liquidation earlier this year, and they were brand new in unmarked factory bags. We packaged them in heavy Ziplok bags for resale. We do not know a lot about them, or what the electrical ratings would be. Presumably, they were made for small "electronic size" loads. You'll probably be disappointed if you plan to use them to control your central unit or air compressor. Key rotation is 1/4 turn, and the keys can be removed in either the "On" or "Off" position. The switch face attracts a magnet, although it looks like either stainless or chrome plated. The remainder of the lock body does not attract a magnet, and appears to be made of cast zinc. According to the calipers Overall length, excluding leads and terminals: .787" / 20.00mm Lead length: 4-1/2" / 114.31mm approx. Face diameter: .587" / 14.92mm Diameter of body threads: .445" / 11.31mm Underside of face to first thread: .268" / 6.82mm