... :Zinc Alloy 2.Finish:Chrome/ Nickel 3.Pass ROHS Switch key Lock, Switch Lock Description:1) Materials: Zinc Alloy dia cast housing ... ) Key may be withdrawn in one or two positions.6) Rotation angle 90 or 180 degree CW.7) All key alike ... the customers as supremacy.Power Lock, Switch Lock, Electric Lock,Key Lock,Key Switch Lock, Electronic Lock Switch key Lock with Dust Shutter