Diameter 6 cm, Stretchable<br><br><br><br><img src="http://gdetail.image-gmkt.com/004/604597139/2015/11/c0d6b269-4b1a-4220-bab0-4934d6794c35.jpg" undefined="" width="940" height="940"><br><img src="http://gdetail.image-gmkt.com/004/604597139/2015/11/e9aca92c-bc24-4fa2-a368-87824f4d5574.jpg" undefined=""><br><img src="http://gdetail.image-gmkt.com/004/604597139/2015/11/5d9f8818-e945-4817-a34a-e18c92959d86.jpg" undefined="" width="940" height="940"><br><br>