Disc Makers Ultra A-grade Hydroshield professional discs were developed with state-of-the-art Taiyo Yuden WaterShield technology. Featuring a hi-def, glossy, smudge-resistant printable surface, Ultra Hydroshields deliver an amazing printed disc - light years beyond any other inkjet printable disc. Not only do these blank CDs feature an excellent printing surface, their speed and compatibility are nearly impossible to beat. Supporting write speeds of up to 52x, these discs have a very low reject rate â€“ you get speed AND accuracy. All of our Ultra A-grade discs set industry standards for compatibility, speed, and playback - guaranteed!