Liangxiang ABS Mic Microphone Interview Square Cube Logo Flag Station Black Suitable for Professional interview microphone. Square shaped design, large place to show logo, can be engraved with PVC board by yourself or pasted by multicolor printing sticker. Color: black. Material: durable hard ABS plastic. Size (L*W*H): about 6.7 x 6.7 x 5.1 cm. Hole diameter: about 3.9cm (internal with adjustable cotton). Simple and practical design, and easy to carry.