Reducing Washers 2" x 1-1/2" - Reducing Washers are Used To Reduce the Size of a Knockout Hole in an Enclosure.Reducing Washers 2" x 1-1/2" features include: Use to reduce the size of the knockout in a steel outlet box or other metal enclosure or cabinet Must use one inside the enclosure opening and one on the outside Galvanized Steel Order Qty of 1 = 1 Piece Below is more info on our Reducing Washers 2" x 1-1/2"