K-4 / Kukje (Korea)
- Material: ABS plastic
- Adjust the bridge band with a knob, there is a shock-absorbing foam pad inside.
- Safe design, capable of withstanding high impact force.
- Quality standards: KCS (Korea)
- Comes with the company's strap

K-157 / Kukje (Korea)
- Material: ABS plastic
- Adjust the bridge band with a knob, there is a shock-absorbing foam pad inside.
- Safe design, capable of withstanding high impact force.
- Color: White, Yellow
- Quality standards: KCS (Korea)
- Comes with the company's strap