Aluminum Diamond Plate / Tread Brite is known for its cosmetic qualities and structural qualities in heavy thicknesses. The 3003 alloy has a bright highly reflective finish and raised "diamond" pattern. The 6061 alloy has a mill finish with the raised "diamond" pattern and is used when structural strength is a requirement. Tread Plate is available in 6061-T6. Ask us for a quotation.