The product middle has a 2 hollow, making an allowance for DIY placement of small gadgets which will have unexpected effects, equivalent to glowing balls. The product has a 20 rib design, which may make the TI filter paper more comfortable to adhere to the clear out cup wall, making it more comfortable to place the clear out paper. Color: clear Material: plastic Package Contents: 1 * Filter cup Only the above equipment content, different merchandise are not included. Note: Light mirrored image and diverse displays can cause the color of the object within the photo somewhat diversified from the genuine thing. The size allowed error is +/- 1-3cm.