Newton Cradle Pendulum Ball

Unleash brain like Newotn in this product.

Item Name:Newton's cradle pendulum balls

Features and specifications:

Specifications:
• Size: 8.5 x 7 x 9 cm (3.35 x 2.76 x 3.54 in)
• Style: Square, T-shape
• Material: Steel ball, plastic skeleton, fishing line

Reminder: The parcel has been packed carefully. Please open it carefully as well. The rope is easy to tie