Set Of Shim Consisting Of 3 Items For Duplex Check Valve Are (1) Stainless Steel Shim Id:14.5 Mm X Od:21.7Mm X 1Mm Thickness Aisi-304, Qty/Set-01 No.(2) Stainless Steel Shim Id:14.5Mm X Od:21.7 Mm X 0.5Mm Aisi-304 Qty-01 No/Set.(3) Stainless Steel Shim Id:14.5Mm X Od:21.7Mm X 0.25Mm Aisi-304 Qty//Set-01 No. [ Warranty Period: 30 Months After The Date Of Delivery ] ]