SUNWAYFOTO MFR-150S Wormdrive Macro Rail w Arca / RRS Compatible Clamp for Precision 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"> Dual Adjusting Cranks. 1 at each end. </span></li><li><span class="a-list-item"> Adjustable Tension / Damping. </span></li><li><span class="a-list-item"> Arca / RRS Compatible Screw Knob Clamp </span></li><li><span class="a-list-item"> Fully RRS Lever Clamp compatible Double Arca Dovetails </span></li><li><span class="a-list-item"> Precision machined from solid aircraft-grade aluminum </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31AG2KiD7oL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/414FFngEWtL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Cvda6N0RL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/411pqiHigRL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/315nSwU8vaL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31-S1iM7I%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41WzFPDEwhL.jpg" noproxy>