Product details:
Motion Control Coupling, 6-Beam Set Screw Style, Bore Dia. 12mm x 8mm, Min. Bore (mm) 8, Max. Bore (mm) 12, Outside Dia. (In.) 1.25, Outside Dia. (mm) 31.8, Clearance Dia. (In.) 0.879, Clearance Dia. (mm) 22.33, Overall Length (In.) 1.75, Overall Length (mm) 44.5, Length through Bore (In.) 0.82, Length through Bore (mm) 20.82, Set Screw, Screw Size (mm) M6, 2 (120 deg.), Torque (In.-Lbs.) 50, Torsional Stiffness (Deg. /In.-Lbs.) 0.071, 6000 Max. RPM, 3 Degrees , 0.015, +/-0.01