Taiyo Yuden/JVC J-BDR-25ZZ-50SB6L 6x 25GB BD-R LTH Single Layer Blu-ray Shiny Silver Recordable Media 50-Disc Spindle Recording capacity: 25GB (recording on a single-sided, single layer disc) Writing speed: 1 to 6x NOT compatible with LG 4x, 6x, 8x / Pioneer 4x, 6x, 8x / Lite-on 4x. Please go to vinpowerdigital.com for detail compatibility list. Format: Write-once type Shiny Silver Surface