Material: Hubs made from Aluminium. Spider made from Polyurethane. Shore hardness 98°A (red). - Zero backlash, insertable elastic coupling. - With removable half shell clamps, ready-to-install for rapid mounting with the possibility of demounting without removal of the other units. - Many different sizes and diameters available. - Size exchangeable with couplings RN, RNK and couplings from many other suppliers. On request with soft spiders 92°A. Temperature range: -30°C to +90°C. Note: Bores with * are pilot bores (not H7). The torque depends on the size of the finished bore.