RR 100# Glide Gear 15mm Rail Rod Support System Baseplate Mount DSLR Follow Focus<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"> Complete rail system is made of Aircraft grade aluminum </span></li><li><span class="a-list-item"> Rails length : 180mm Rails diameter : 15mm Rails center-to-center distance : 60mm Camera height riser adapters length : 85mm </span></li><li><span class="a-list-item"> Screws thread : 1/4 &amp; 3/8 </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41cH2mn2F9L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Yl2RrLfsL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31nbL7WEMuL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31hatwswCIL.jpg" noproxy>