The Leofoto MAB-100 Precision Rifle Ball Head with 100mm Systematic Adapter is machined from solid aircraft grade aluminum and hard anodized for the optimal strength and durability. The MAB-100 is designed to be used with 100mm compatible systematic tripod apexes. It features a redesigned lever-release arca clamp as well as a lever controlled ball. The redesigned clamp comes with an adjustable clamping width. The MAB-100 is essentially an MA-30L ball head attached to a 100mm adapter.. The systematic adapter can only be placed into a 100mm systematic tripod apex.