Aftermarket slider Cover Replacement Kit compatible with Beyerdynamic DT 790 / DT 797 / DT 770 / DT 770 PRO / DT 770 PRO HT / DT 880 / DT 880 PRO / DT 880 PRO HT / DT 990 / DT 990 PRO / HS 200 Dyn / HS 200 Rotor / HS 200 Trend / HS 400 headphones. It's 3D printed from high-quality PLA plastic and is much more durable than the original parts. The kit is compatible with the original screws that came with your headphones, please note it's only a cover, not a slider mechanism.