Zincalloydiecasthousingandplasticcylinder.Stainlesssteelcappedbezel.Zincplatedstandard.4disctumblermechanism.Brasskeys,nickelplated.Keymaybewithdrawninoneorbothpositions.Silverplatedcontactsandterminals.2position(off-on)2terminals.Hexnutorspeedclipmounted.Allkeyedalikeor20combinationsstandard.20combinationsavailable.