FBT Double Disc Coupling Features: 1) High torque capacity and excellent response2) Zero backlash 3) ldentical clockwise and anticlockwise rotational characteristics 4) Effectively correct the axial and radial and angular installation deviation Present we can offer the coupling with outer diameter from 19 to 94mm,and the clamp range from 4 to 45mm,in high torque and Zero backlash