Check the listing for details. Complete Slider Replacement Kit for Beyerdynamic DT 770/880/990. Condition: New. Listed at 14.95 USD. Upgrade your Beyerdynamic DT 770/880/990 headphones with this complete slider replacement kit. This high-quality kit includes everything you need to replace the sliders on your headphones and bring them back to their best. Perfect for anyone who loves to customize and maintain their audio equipment, this kit is easy to install and will significantly prolong the lifespan of your headphones. Our customer service is top notch - if you ever have any issues, we will make it right. This is a slider repair kit for various models of the Beyerdynamic headset. We offer a wide range of colors and finishes. We can even do a custom color combination if you don't see your color choice listed (please DM). This design is substantially more durable and stronger than the manufacturer's original component. Required T10 Torx Hex Key - Not includedFits:DT 790 / DT 797DT 770 / DT 770 PRO / DT 770 PRO HTDT 880 / DT 880 PRO / DT 880 PRO HTDT 990 / DT 990 PROHS 200 Dyn / HS 200 Rotor / HS 200 TrendHS 400MMX 300 This is a 3rd party upgrade for Beyerdynamic's SLIDER REPAIR KIT BLACKARTICLE NO.903760EAN4010118903762