The D400 Jumbo Grip Head looks like the top of a traditional overhead stand. Commonly referred to as a lollipop this accessory converts combo and universal head stands with a standard 28 mm/1 1/8 inch receiver to an overhead style stand. The D400 has a 28 mm pin that mounts into a 28 mm receiver, a 4 1/2 inch/10 mm grip head and a 28 mm/1 1/8 inch receiver are on top of the pin giving you capability of working like you would when you are using overhead stands. Overhead stands are commonly used for butterfly frames, modular frames and the Avenger fold away and compact fold away frames. Recommended Accessories: A1035CS, A1045CS, A5036CS, A5042CS, B6039CS, E200, E650, 087WBK.