When unlocking the quick release, the plate is only released enough to slide in the clamp, and a spring-loaded pin on the bottom prevents the plate from sliding out. The MB 8.5 comes with a lever-action quick release platform that is said to be "Arca-compatible." The 65mm plate included with the package has plastic "anti-twist" stubs on one end, and fits perfectly within the quick release. The dial clicks positively into varying levels of friction, and can be adjusted while the ball is either locked or unlocked (most minimum friction devices require a locked ball). A relatively large dial in the center of the knob is used to set the minimum friction that the "unlocked" position of the main knob will allow. On the side of the head, opposite the drop slot, is a large, rubber-rimmed locking knob. This large ball promises a smoother rotation than smaller Cullmann heads, along with greater locking power (and associated maximum load capacity) due to a greater surface area for the locking mechanism to grasp. The largest Cullmann heads have a machined aluminum ball with an almost industry standard diameter of 54mm. The usual manual and warranty card round out the contents of the box. The head comes nicely packaged with a soft-sided zipper case for storage, a large microfiber cleaning cloth, a 65mm plate for the (installed) quick release, a supplemental mounting platform for the ball, and the hex wrench used to switch them. However, the dull gray of the blocky MX465 quick release platform looks rather out of place compared to the rest of the head.
Even the knobs on the body have brushed aluminum caps, completing the look. The Cullmann "Magnesit" name refers to the cast-magnesium components in their tripods, but the ball heads in the series are primarily made from aluminum. The external design of the head itself is a very tall and relatively slender cylinder, with a body finished in a stylish combination of matte-black paint and shiny, machined aluminum.
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