5 Pcs, Reducing Washer for 3 In. to 1 In., G60 Galvanized Steel Ensures Secure & Durable Installation of Connector & Conduit to Box Or Enclosure - Walmart.com
2 in. x 1-1/2 in. Rigid Conduit Reducing Washer 68615 - The Home Depot
Repair Weld Washer 1/2" – Barnes 4WD
Raco 1383 2-1/2" to 2" Reducing Washer, Steel | Independent Electric
Bridgeport 1062 Galvanized Steel Reducing Washer for Rigid/IMC Conduit,: Amazon.com: Tools & Home Improvement
Reducing Washer - 1-1/4" to 1" - Panther Fabrication