Decoration Physics Science School Teaching Supplies Cradle Balance Steel Balls Balance Ball Model

Label:Yes Color:As the picture show Name: Cradle Balance Steel Balls Function: Desktop decorations, Physics teaching tools,Early education, Gifts, etc 100%brand new and high quality. Material: Plastic+Steel ball Size: 9 x 7.5 x 9.5 cm Features: 1.Balance Balls are a classic desk toy. Also known as Cradle, the clacking of the steel balls will keep you entertained throughout the day. 2.Pull back one or more of the balls, release them and the same number of balls will swing up on the opposite side. 3.This set of balance balls is fun for the office and makes a great desktop gift. 4.The apparatus usually consists of an odd number of identical steel balls each suspended by a bifilar suspension from a sturdy frame.

Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package Includes: 1x Cradle Balance Steel Balls Mold