Halex 3/4" to 1/2" Plated Steel Rigid Reducing Washer, 4-Pack a dependable solution for centering connectors, conduit, and nipples in oversized knockouts. Crafted from durable plated steel, these washers feature a concave design and are intended to be used in pairs, with one washer on each side of the electrical box. They effectively reduce knockouts from 3/4 inch to 1/2 inch, ensuring a secure fit. UL listed for safety and compliance, these washers are a reliable choice for electrical installations that require precision and durability. Model Number: 26820