Circuit Kits For Kids Age 3 12?25Pcs Circuit Blocks Board?Diy Electronics E Model:BMB104420 Add A Chain Steel Ball

Add A Chain Steel Ball To Increase The Load Pressure

2'' with a 5 mm thickness

This hobby kit incorporates the cello into a "mechanical music box"

Fabulously Look Make It A Perfect Housewarming Gift For Your Friends And Family

Shaft Size: 10 X 2Mm/0

Circuit Kits For Kids Age 3 12?25Pcs Circuit Blocks Board?Diy Electronics E Model:BMB104420 Add A Chain Steel BallStem Education Toys Small Circuits, Big Knowledge, This Electronic Building Block Set Integrates Multiple Knowledge Points And Has High Educational Value. Children Can Learn Circuit Knowledge Such As Parallel Connection And Series Connection. The Circuit Toys Develops Kids' Minds, This Electronic Building Block Set Introduces Essential Circuit Knowledge And Enhances Problem Solving Skills. It Is Very Suitable For Discussion And Interaction With