ABG II Modular Hip Stem || Stryker Howmedica Osteonics Corp. Mahwah, NJ 07430 || Stryker Ireland Carrigtwohill Industrial Estate, Carrigtwohill County Cork, Ireland. || The ABG II Modular range of implants is constituted of 8 right stems and 8 left stems. The necks are made of GADS Vitallium, a proprietary Co Cr alloy that Stryker has developed. GADS stands for Gas Atomized Dispersion Strengthened. IT is a Co Cr alloy that is a corrosion resistant and demonstrates qualities of improved fatigue strength (with respect to regular Co Cr alloy). Neck Range - The ABG II modular neck range is composed of 10 reversible neck implants. There are different options in terms of length, version and neck angle. The AG II Modular necks come in two different lengths: 28 mm (short) and 36 mm (long). The necks are offered in two version angles ; 0 and 7. The 0 and 7 necks are available in 125, 130 and 135 neck angles.