... steel spring flexible coupling 1.Clamping type, 2 screws for clamping 2.High torque capacity & excellent response IBEST manufactures ... Coupling* Stainless steel spring flexible coupling, clamping type, 2 screws for clamping. * High torque capacity and excellent response. * Zero backlash. ... , 6.35mm, 8mm, 10mm. * Torque <4.0Nm for D=23mm, <12.0 Nm for D-=38mm; The axial degree<1mm, the corner setover<2 ...