This is a pre-owned rotor. Please look at pictures for more details.

Description from Manufacturer:
Key product features
Have innovative, high quality materials that provide consistent, safe, and long lasting performance
OEM-Style vane configuration pulls heat from the inner part of the wheel, away from the caliper
balanced for smooth operation
Industry low run-out and DTV specifications enables a smooth pedal feel and insures quality
From the Worldwide Leader in Braking Technology
Clear look coating protection
Prevents rust and corrosion; adds a clean look on today’s vehicles with open-wheel designs.

Other product advantages
Aluminum-Zinc coating protection prevents rust and corrosion, extending life and provides better heat dissipation
Factory-engraved edge code and minimum thickness
Full coverage for Domestic, Asian and European vehicles

Bosch QuietCast Premium Disc Brake Rotors utilize innovative materials that ensure the highest quality performance, prevent rust and corrosion with clear-look coating protection, provide a clean look for today's open-wheeled vehicles, are 100% precision balanced for smooth operation, and have a factory-engraved edge with code and minimum thickness specifications.

Professional installers recognize Bosch as OEM and can be assured Bosch QuietCast­ Premium Brake Rotors provide the highest quality to the aftermarket, from the company with over 70 years of OE braking expertise.

Features & details
Precision balanced to insure smooth operation with no pedal pulsation
OEM style vane configuration provides more efficient heat dissipation, reduces vibration that can cause noise, and extends rotor life
G3000 heat-flowed castings provide consistent wear, long life, and quiet operation
Bi-metal aluminum and zinc clean-look coating/Alutherm 80 extends the life of the rotor and provides a clean look for today's open wheels
OEM style ABS tone ring (on required applications) provides trouble free operation of Antilock Brake and Traction Control systems
Front: Mercedes-Benz: 2010-2014 GLK350