Don Zeck Lens Cap for Canon 500mm f/4.0 USM IS Lens<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"> Finally， a practical and effective lens cap to protect your front element from scratches， dust， rain， and other hazards! </span></li><li><span class="a-list-item"> This improved design features a handle to facilitate mounting or removing the lens cap while the lens hood is in the shooting position. </span></li><li><span class="a-list-item"> The cap can be mounted on the lens while the hood is in the shooting position orin the stored position. </span></li><li><span class="a-list-item"> The handle allows a firm grip on the cap so that it can be easily installed. </span></li><li><span class="a-list-item"> The handle will compress for easy storage while your lens is in it's case. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/4154u1BqrqL.jpg" noproxy>