SunwayFoto FB-Series FB-28i Classic Ballhead with Screw-Knob Clamp， 26.45lbs Capacity<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"> SUNWAYFOTO® brand Arca-Swiss compatible </span></li><li><span class="a-list-item"> Accepts QR's from RRS Wimberley， Jobu， Arca Swiss， Kirk， Markins， etc. </span></li><li><span class="a-list-item"> 26lb Max load </span></li><li><span class="a-list-item"> Bottom thread: 3/8" with 1/4" adapter. </span></li><li><span class="a-list-item"> Includes Independent Ball Lock </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51KxvBG3l1L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31uVjTE7yfL.jpg" noproxy>