The MPA-2 Monopod Head from Kirk provides you with both good quality construction and budget-friendly value. All of the external components are crafted from tough 6061-T aircraft aluminum--including the solid, captive-design knobs. However, in order to avoid corrosion, the internal metal parts are all stainless steel. The bearings are made from self-lubricating Delrin composite, and the tripod socket is compatible with any 3/8-inch threads.