John Walker Professional Grade Tuning Fork - Set of 2 - A-440 &amp; C-523.3<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Includes 2 forks. One A-440 and One C-523.3 </span></li><li><span class="a-list-item"> Made from hardened， tempered blue steel </span></li><li><span class="a-list-item"> Each fork ships in a reusuable plastic pouch </span></li><li><span class="a-list-item"> Professional Grade </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51WvD7Q1XxL.jpg" noproxy>