| model | material quality | Length (mm) | colour | Weight (g) | function | 3D |
| K213-1 | carbon steel | 21 | silver white | 10 | fixed torque | Download |
| K213-2 | carbon steel | 21 | silver white | 11.01 | fixed torque | Download |
| K213-3 | carbon steel | 21 | silver white | 11.01 | fixed torque | Download |
| K213-4 | carbon steel | 21 | silver white | 11.01 | fixed torque | Download |
| K213-5 | carbon steel | 21 | silver white | 11.01 | fixed torque | Download |
| K213-6 | carbon steel | 21 | silver white | 11.01 | fixed torque | Download |
Any stop, can be positioned and stopped at any angle within the opening and closing range
Smooth flipping, simple structure/easy assembly
Service life: 20000 times of opening and closing, torque attenuation of 20%
