【DURABLE CONSTRUCTION】 Made of thermoplastic and full thread stainless steel screws for long-lasting durability, the buttons can resist scratches and dust and will not become fragile or crack easily. 【T-Shaped Button Handle】 The ergonomic T-shaped handles with current satin textures are easy to use. The large clamping force allows you to fix your luminaires without the help of any tools. 【M6 Universal Thread】Screw into any M6 female threaded hole to quickly and conveniently replace old broken knobs. 【Wide Compatibility】 Compatible with NEEWER 480/530/660 two-color LED lights (2.4G remote control and app control version), RGB LED lights (App Control version), P200 LED lights (2.4G remote control and RGB control app version), and more; Note: Only screw button set with gasket is included. 【Package Content】 4 × T-shaped screw knob, 4 × seal ring