Change the model:
✓ E2 Mass Standard - knob weight - 5 g
✓ E2 Mass Standard - knob weight - 2 kg
✓ E2 Mass Standard - knob weight - 10 g
✓ E2 Mass Standard - knob weight - 5 kg
✓ E2 Mass Standard - knob weight - 20 g
✓ E2 Mass Standard - knob weight - 10 kg
✓ E2 Mass Standard - knob weight - 50 g
✓ E2 Mass Standard - knob weight - 20 kg
✓ E2 Mass Standard - knob weight - 100 g
✓ E2 Mass Standard - knob weight - 50 kg
✓ E2 Mass Standard - knob weight - 200 g
✓ E2 Mass Standard - knob weight - 1 g
✓ E2 Mass Standard - knob weight - 500 g
✓ E2 Mass Standard - knob weight - 2 g
✓ E2 Mass Standard - knob weight - 1 kg