1 PC Cradle Balance Steel Balls Perpetual Motion Collision Teaching Ball Physics Science Pendul J9G3

Label: Yes

Specification: Material:alloy Size:9/14/18cm(3.6/5.5/7.1") Color:as picture

Package include: 1*Bumping Balls Newton Cradle

Notes: 1. Due to various factors such as monitor brightness and light brightness, the actual color of the product may be slightly different from the picture displayed on the website. 2. Please allow for slight manual measurement bias in the data.