This is a Genuine Keurig replacement part designed specifically for Keurig B60, K60, B40, and K40 models. The Base Tray Holder is made of black plastic and is meant to securely hold the base tray in place for these Keurig coffee makers. This part is essential for maintaining the functionality and stability of the machine, ensuring that the base tray remains securely in place during use. It is a practical and necessary component for those who own Keurig coffee machines and need a replacement part to keep their appliance in good working condition.