Black On-Off Rocker Switches. High quality 2 position on-off rectangular rocker switch. These switches have 2 positions.  In one position the centre pin connects to one of the outer pins.  In the other position the centre pin connects to the other outer pin. These switches are ideal for many applications including power switches, and for use in cars, boats, hobbyists etc. If you need the 3 position on-off-on version of this switch then (Please click here to order) OVERALL SIZE: 30.5mm x 13.5mm x 31mm(L x W x H) PANEL HOLE SIZE: 29mm x 10.5mm PINS: SPDT 3 Pin. RATING: 15A 250VAC TYPE: KCD3 I am a fully qualified electronics engineer with over 30 years experience, so please contact me if you have any questions and I will get straight back to you. Thanks for looking.