... stem: 0.5-8mm pvc coated, galvanized 1. Material: steel plate, stainless steel plate, aluminum plate, titanium plate, lead plate, nickel plate ... mesh, expanded brass mesh, expanded copper mesh, expanded stainless steel mesh, expanded nickel mesh. Opening in the shape of diamond ... , hexagonal or special shape. 4. Diagram of hole for your reference 5.Features: The expanded metal mesh is ...