Zincalloydiecasthousingandplasticcylinder.Brightchromeplatedstandard.3disctumblermechanism.Brasskeys,nickelplated,withplasticcover.Keymaybewithdrawninoneorbothorthreepositions.Silverplatedcontactsandterminals.S3312position(on-on)60index3terminals.S3322position(off-on)60index2terminals.S3333position(off-on-on)60index3terminals.Hexnutorspeedclipmounted.Allkeyedalikeor16combinationsstandard.16combinationsavailable.