For example d1xd2 (mm) : 10x10 , 10x12 , 10x12.7 , 10x14 , 10x15 , 10x16 , 10x17 , 10x18 , 10x19, 10x20 , 10x24 , 12x12 , 12x12.7 , 12x14 , 12x15 , 12x16 , 12x17 , 12x18 , 12x19 , 12x20 , 12x24 , 12.7x12.7 , 12.7x14 , 12.7x15 , 12.7x16 , 12.7x17 , 12.7x18 , 12.7x19 , 12.7x20 , 12.7x24 , 14x14 , 14x15 , 14x16 , 14x17 , 14x18 , 14x19 , 14x20 , 14x24 , 15x15 , 15x16 , 15x17 , 15x18 , 15x19 , 15x20 , 15x24 , 16x16 , 16x17 , 16x18 , 16x19 , 16x20 , 16x24 , 17x17 , 17x18 , 17x19 , 17x20 , 17x24 , 18x18 , 18x19 , 18x20 , 18x24 , 19x19 , 19x20 , 19x24 , 20x20 , 20x24
Wear-resistant, high hardness, good response.
Couplings are often used to connect servo motors, stepper motors, encoders, screw drives, machine tool platforms, spindles, 3D printers, etc.