Shomer-Tec Hollow Spy Bolt Secret Storage Container<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Updated and improved version of the old Soviet KGB “dead drop” hollow bolt used during the Cold War </span></li><li><span class="a-list-item"> Looks like an ordinary 3/4" diameter bolt (3.43" long)， but hollow </span></li><li><span class="a-list-item"> It has reverse threading on the bolt head for additional security </span></li><li><span class="a-list-item"> Features an O-ring seal for weather-proof storage of small valuables， communications， etc. </span></li><li><span class="a-list-item"> Its secret storage compartment has a diameter of .49″ and a maximum depth of 2.81″ </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41U0RQiYD4L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41g1V%2B50a2L.jpg" noproxy>