The biarticular head features a metallic cup, that is in contact with the acetabulum, and one insert in polyethylene which contains the femoral head inside.

There are two articulations made: one between acetabulum and cup, and another between the insert and the femoral head.

The cup is made of stainless steel (AISI 316 LVM), and is presented in 17 sizes from 39 to 55 mm, with a cadence of 1 mm.

The insert is made of polyethylene of a ultra high molecular weight (UHMWPE). It is presented in four sizes with an internal diameter of 28 mm.