Specification:<br>1.Material:metal<br>2.Size:The Diameter of Button: about 1.9cm<br>The Length of Spring: about 2cm, Can Stretch up to 4cm<br><div class="divImageDetail"><p><img src="//agdetail.image-gmkt.com/m430/491/015/774015491/img/agdetail.image-gmkt.com/491/015/774015491/img/img.sellercube.com/UploadFile/P0/SKU239988/qoo10_eab4ed1b88b83a476c0bd34d833ccc6d.jpg"style="width: 600px; height: 600px;" alt="image"></p><p><img src="//agdetail.image-gmkt.com/m430/491/015/774015491/img/agdetail.image-gmkt.com/491/015/774015491/img/img.sellercube.com/UploadFile/P0/SKU239988/qoo10_78dd0f9f304b96ef854041ce12048267.jpg"style="width: 600px; height: 600px;" alt="image"></p><p><img src="//agdetail.image-gmkt.com/m430/491/015/774015491/img/agdetail.image-gmkt.com/491/015/774015491/img/img.sellercube.com/UploadFile/P0/SKU239988/qoo10_8cd09d0d190898962551c6a3c299dffd.jpg"style="width: 600px; height: 600px;" alt="image"></p><p><img src="//agdetail.image-gmkt.com/m430/491/015/774015491/img/agdetail.image-gmkt.com/491/015/774015491/img/img.sellercube.com/UploadFile/P0/SKU239988/qoo10_bdc1139b74416199104456a65045018e.jpg"style="width: 600px; height: 600px;" alt="image"></p><p><img src="//agdetail.image-gmkt.com/m430/491/015/774015491/img/agdetail.image-gmkt.com/491/015/774015491/img/img.sellercube.com/UploadFile/P0/SKU239988/qoo10_c6516fe8681b92ec9b7ab36a493e52f8.jpg"style="width: 600px; height: 600px;" alt="image"></p></div><br><br><br>