size: 1/2"×3/8", 3/4"×1/2", 1"×1/2", 1"×3/4", 1-1/4"×1/2", 1-1/4"×3/4" ITEM NO. RB1~RB6 size: 1-1/4"×1", 1-1/2"×1/2", 1-1/2"×3/4", 1-1/2"×1", 1-1/2"×1-1/4", 2"×1/2" ITEM NO. RB7~RB12 size: 2"×3/4", 2"×1", 2"×1-1/4", 2"×1-1/2" ITEM NO. RB13~RB16 material: steel This reducing bushing fits into any corresponding fitting to reduce the opening to another size. Reducing bushing is made from steel with a zinc electro-plated finish. For more products catalog please contact our company.