Zinc with Aluminum Finish Casement Window Hardware Set Made for outswing window, such as basement or overhead window, left hand hinge side Replacement for most broken or worn casement window operators For wood or metal outswing window frames - hardened for long life - all screws included Housing and handle are a zinc/aluminumfinish - arm and components are steel/aluminum finish Unit measures 12 inches total with a left hand 9-inch arm