Product Name: Square Newton pendulum
Material: steel ball + plastic + fishing line
Small size: 85 * 70 * 90mm
Medium size: 135 * 115 * 135mm
Large size: 180 * 180 * 150mm
Trumpet weight: 100g
Medium weight: 250g
Large weight: 500g
1. There is 2-3cm difference according to manual measurement. please check the measurement chart carefully before you buy the item.
2. Due to different display settings, the color of real item may slightly different from the picture show.