Polished Stainless Steel Strainer for Kitchen Sinks. SPECIAL LONG ADAPTER for kitchen sinks with thick bottom such as Fireclay sinks. Made of premium quality 304 stainless steel to provide excellent resistances to corrosion and rust. The strainer basket has a convenient knob to remove, pull up or push down. Ball bearing mechanism holds the basket strainer from dropping into closed position. To fill sink with water simply push the basket strainer tip down. To return to open position, simply lift the knob up. Basket can be removed for cleaning.