Specification:<br />Material:Steel<br />Handle diameter: Approx. 12mm<br />Size: Approx. 141x50x19mm/5.55&amp;quot;x 1.97&amp;quot;x 0.75&amp;quot;<br />18 Clamps：Round x 9/Flat x 3/Square x 3/ Triangle x 3<br /><br />Features:<br />Storage case included.<br />Four sets of bits included for different watch case types.<br />Easily adjustable for various case dimensions (20mm to 35mm)<br />Designed for opening and fitting screw cases on waterproof watches.<br /><br />Package Included:<br />1x Watch case opener with 18 bits<br />1x Blue Storage box