Innovation HighlightsThis product adopts the REX joint and SAR joint patented by SDS. These two joints adopt a unique ball track design, which allows the lightest design and smallest envelope space in the industry. At the same time, with the patented counter-track design, the REX universal joint provides the highest transmission efficiency among fixed ball joints, while the SAR universal joint has the technical advantages of high efficiency and long service life same with traditional AAR joints.