?Material:The base is made of durable wood,ball is made of metal; Creative toy set for kids.
?Demonstrates Newton's Laws of Motion,Own your special piece of science and explore significant values of physics
?SWING TIME---The balls continue in perpetual motion FOR ONLY 15-25 SECONDS due to the resistance of the air and friction
?Great gift idea for your sweetheart at birthday, Christmas, Children's day and other festivals.
?100% SATISFACTION AND MONEY BACK GUARANTE: Just try our products and if you don't absolutely love them let us know and we will refund your purchase price NO QUESTIONS ASKED!

Technical Details

Product Details

Package Dimensions
Width : 4.72 inch
Height : 1.57 inch
Length : 5.51 inch

Shipping Weight: 0 ounce (View shipping rates and policies)

ASIN : B074DTN6D4