what is the diameter of the magnetic balls?

About 1.5 in, pretty much golf ball size

From the reviews, it looks like kids from 2 and up would enjoy these. Any feedback on kids 5 to 7?

Kids and adults enjoy these, in my experience. (No, I do not work for the company that produces this, and I do not sell this or any other toy product.)

What size are the metal balls?

I'm not sure of the exact size, but they do not pose a choking hazard for young children. I bought two sets for toddler classrooms. The children love them and they are safe to play with.

Does anyone know if these smart max pieces are compatible with the magformers version called “stick-o”s?

The magnets should work together however the Smart Max are bigger and rounder.

Smartmax Start Plus Stem Building Magnetic Discovery Set Ages 1

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€ 142.74

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Description

🧲 Build brilliance early — STEM fun that sticks!

CURVED CREATIVITY - Includes 4 curved bars to unlock innovative engineering designs
ENDLESS EXPANSION - Compatible with all SmartMax sets for limitless construction fun
MAGNETIC POWERHOUSE - Magnets that hold 60x their weight for mind-blowing builds
SAFE AWARD WINNING - Sonically welded, non-toxic materials parents trust
VIBRANT STEM STARTER - 30 colorful, oversized pieces designed to captivate young minds

The SmartMax Start Plus STEM Magnetic Discovery Set offers 30 oversized, colorful magnetic bars and metal balls designed for children ages 1-6. With magnets 60 times stronger than their weight and unique curved bars, it encourages early engineering skills and creativity. Compatible with all SmartMax sets, it ensures endless building possibilities in a safe, award-winning design.

Specifications

ASIN	B00YHQT7QQ
Additional Features	Non Toxic
Age Range Description	Kid
Best Sellers Rank	#53,083 in Toys & Games ( See Top 100 in Toys & Games ) #392 in Toy Magnetic Building Sets
Brand Name	SmartMax
Color	Blue, Green, Purple, Red, Orange, Yellow
Customer Reviews	4.8 4.8 out of 5 stars (226)
Educational Objective	Engineering Skills
Global Trade Identification Number	00847563009657
Indoor Outdoor Usage	Indoor
Item Dimensions	11.8 x 2.4 x 15 inches
Manufacturer	Smart Toys and Games
Manufacturer Part Number	SMX 310US
Manufacturer recommended age	12 months - 5 years
Material Type	Metal, Plastic
Model Name	Start Plus
Model Number	SG_B00YHQT7QQ_US
Number of Pieces	30
Number of Players	1
Operation Mode	Manual
Set Name	Start Plus
Size	Medium
Subject Character	Oversized bars and metal balls
Target Audience	Kids
Theme	Transportation
Toy Building Block Type	Magnetic Toy Building Block
UPC	847563009657

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Fantastic experience overall. Will recommend to friends and family.

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€ 142.74

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Portugal.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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SmartMax Start Plus STEM Building Magnetic Discovery Set, Ages 1-6 (30 Pieces)

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