Sigma Engineered Solutions ProConnex 2-1/2 to 2 in. D Steel Reducing Washer For Rigid/IMC 2 pk - 3172939
Sigmas Reducing Washers are used to decrease the size of a knockout in a steel outlet box or metal enclosure. Two of these zinc-plated steel reducing washers are required for each knockout. They are embossed for self-centering and easy installation.