Specification Brand : uxcell BulletPoint1 : Product Name : Key lock Switch;Voltage : AC 220V / 380V,The key can be removed from the switch in any state BulletPoint2 : Current : 1A;Thread Dia(Approx) : 11mm/0.433" BulletPoint3 : Overall Size(Approx) : 1.5 x 2.9cm/0.6" x 1.14"(D*L);Color : As Picture Shown BulletPoint4 : Material : Metal;Weight : 18g;Model : s135 ; 2 positions can pull out the key BulletPoint5 : Package Content : 4 x Key Lock Switch;8 x Keys ItemName : uxcell 4Pcs Electric 2 Positions on Off Metal Key Lock Switch W Keys ItemPackageDimensions_Height : 0.59 inches ItemPackageDimensions_Length : 3.54 inches ItemPackageDimensions_Width : 2.36 inches ItemPackageQuantity : 4 ItemTypeKeyword : electronic-component-key-operated-switches Manufacturer : uxcell Material : Metal MountingType : Panel Mount NumberOfItems : 4 NumberOfPositions : 2 PartNumber : a24031800ux0677 ProductDescription : Features Two terminals, in both positions. Keyed can be taken off when the switch stays on or off position. Miniature key lock switch for simple locking and switching tasks.Note: This KEY design is not for security reason, it is just a design to prevent unintentional switching--to actuate the switch you have to insert a key into the switch instead of push a button which anybody could do by mistake, in some cases one key lock switch may be opened by the key of another set,if you buy more than one set , please note we can not ensure very key lock has its unique keys.