Optical Quantum 6X 50GB BD-R Double Layer Silver Top - 10 pcs Optical Quantum 6X 50GB BD-R Double Layer Silver Top - 10 pcs (MPN: OQBDRDL06ST-10) Write-once, Double layer Top surface: Silver Top Compatible with Blu-ray capable hardware only NOT compatible with all LG 6x, LG 8x, Pioneer 4x, and Pioneer 8x Blu-ray burners