Replication of BD - 

35% or up to 12% to 70% the outer diameter of the BD-25 12 centimeter capacity 25 gigabytes 28% of reflectance reading laser light wavelength 405nm of
The outer diameter of the BD-50 is up to 28% of the wavelength 405nm of 50 gigabytes of reflectance of 12% of the playback laser beam capacity of 12 cm

Blu-Ray Disc Replication