---
product_id: 68517128
title: "Rocker extension (45 pieces)"
brand: "hubelino"
price: "€ 77.54"
currency: EUR
in_stock: null
url: https://www.desertcart.es/products/68517128-rocker-extension-45-pieces
store_origin: ES
region: Spain
---

# Boosts spatial & analytical skills 45-piece modular set See-Saw physics in action Rocker extension (45 pieces)

**Brand:** hubelino
**Price:** € 77.54
**Availability:** ❌ Out of Stock

## Summary

> ⚙️ Build, balance, and brain-boost your playtime!

## Quick Answers

- **What is this?** Rocker extension (45 pieces) by hubelino
- **How much does it cost?** € 77.54 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/68517128-rocker-extension-45-pieces)

## Best For

- hubelino enthusiasts

## Why This Product

- Trusted hubelino brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Modular Mastery:** Seamlessly integrates with popular building blocks for endless creative expansions.
- • **Physics in Play:** See-Saw mechanism demonstrates gravity and momentum, turning fun into hands-on STEM learning.
- • **Cognitive Catalyst:** Enhances spatial intelligence, working memory, and analytical thinking through engaging construction.
- • **Ready Out-of-the-Box:** No batteries or complex assembly needed—just pure, immediate creative fun.
- • **Durable German Engineering:** Crafted with premium quality standards to ensure long-lasting, stable builds.

## Overview

The Hubelino 420503 Marble Run See-Saw Expansion Set is a 45-piece, STEM-focused building toy compatible with major block systems. Designed for ages 4+, it features a unique see-saw mechanism that teaches fundamental physics concepts like gravity and momentum. Made in Germany with high-quality plastic components, this set promotes spatial intelligence and analytical skills while offering seamless integration with existing marble run setups for endless creative possibilities.

## Description

Hubelino420503 Marble Run See-Saw Expansion Set, Compatible with popular building block system, 45 pieces, for Ages 4 and Up (Made in Germany)

## Features

- The 45-Piece See-Saw Expansion is already fun when designing, as its use must be carefully considered and it’s perfect for large marble runs. The marble rolls up the See-Saw until the weight of the marble shifts the center of gravity of the See-Saw and the marble rolls down the See-Saw with a lot of momentum
- Our modular and compatible marble runs are designed to stay put, so your kids can focus on the fun. They promote spatial intelligence and an understanding of fundamental physical concepts like acceleration and gravity. Whether with an instruction booklet or with free play, constructing a marble run stimulates working memory, and improves the capacity for analytical thought. And best of all, we’re building on an existing system to extend its life in the children's room.
- All 45 parts and components of the See-Saw Expansion are compatible with common components from other manufacturers and can therefore be creatively combined with your existing building blocks and theme worlds. Like all products from Hubelino, the See-Saw Expansion is manufactured in Germany under the highest quality standards.
- Content: 45 pieces (19 run elements, 20 building blocks, 2 base plates, 2 marbles and 2 see-saws)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 28.5 x 11 x 14.5 cm; 560 g |
| Manufacturer recommended age | 3 years and up |
| Item model number | 420503 |
| Educational Objective(s) | STEM |
| Language: | German |
| Number of pieces | 45 |
| Assembly Required | No |
| Batteries Required? | No |
| Batteries included? | No |
| Material Type(s) | Plastic |
| Material Composition | Plastic |
| Material Care Instructions | Use a clean, damp cloth to clean the surface. |
| Remote Control Included? | No |
| Colour | Compatible |
| Release date | 10 Mar. 2018 |
| ASIN | B079YVL2FS |

## Product Details

- **Size:** Large
- **Brand:** Hubelino
- **Material:** Plastic
- **Age range (description):** From 4 years
- **Item dimensions L x W x H:** 28.5 x 11 x 14.5 centimetres

## Images

![Rocker extension (45 pieces) - Image 1](https://m.media-amazon.com/images/I/71OyFeMmupL.jpg)
![Rocker extension (45 pieces) - Image 2](https://m.media-amazon.com/images/I/713CxpOWqUL.jpg)
![Rocker extension (45 pieces) - Image 3](https://m.media-amazon.com/images/I/713wZ46vhrL.jpg)
![Rocker extension (45 pieces) - Image 4](https://m.media-amazon.com/images/I/81RsNbhxLoL.jpg)
![Rocker extension (45 pieces) - Image 5](https://m.media-amazon.com/images/I/71VVqOSF49L.jpg)

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**Shop now:** [https://www.desertcart.es/products/68517128-rocker-extension-45-pieces](https://www.desertcart.es/products/68517128-rocker-extension-45-pieces)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-22*