specification:<br /> and boxed<br />jaw distance adjustable8mm to 57mm<br />size :70mm x 28mm x 11mm<br />easy to use<br />simple to use and fully adjustable<br />material: steel<br />color: blue<br />suitable for screw on backs on most watches<br /><br />note:<br />we have square head and round head・it will be sent at random.please sure you don't mind before you order it.<br /><br />package include :<br />1 x watches screw-on back case opener <br />