1,For outdoor mailbox,fence post 2,Process: sand casting 3,Surface :sand blasting, ... as fence and gate ornamentals, cast aluminum mail box, bollard, lighting post ect . Cast aluminum Post Top Ball Caps1. Material : cast aluminum 2. Production process : sand ... 4. Production ability : 600 Ton/Month6. Application: outdoor mail box, fence post ,outdoor decoration ect. Our products are enjoying a great ...