--- product_id: 83968378 title: "Ravensburger GraviTrax Hammer - Add On Extension Accessory Marble Run and Construction Toy For Kids Age 8 Years Up - STEM" brand: "gravitrax" price: "NT$944" currency: TWD in_stock: true category: "Gravi Trax" url: https://www.desertcart.tw/products/83968378-ravensburger-gravitrax-hammer-add-on-extension-accessory-marble-run-construction store_origin: TW region: Taiwan --- # Boosts marble velocity Fully expandable system Innovative STEM engineering Ravensburger GraviTrax Hammer - Add On Extension Accessory Marble Run and Construction Toy For Kids Age 8 Years Up - STEM **Brand:** gravitrax **Price:** NT$944 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your marble run game with unstoppable momentum! ## Quick Answers - **What is this?** Ravensburger GraviTrax Hammer - Add On Extension Accessory Marble Run and Construction Toy For Kids Age 8 Years Up - STEM by gravitrax - **How much does it cost?** NT$944 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/83968378-ravensburger-gravitrax-hammer-add-on-extension-accessory-marble-run-construction) ## Best For - gravitrax enthusiasts ## Why This Product - Trusted gravitrax brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **STEM-Powered Creativity:** Engage critical thinking with hands-on physics, magnetism, and kinetic experiments. - • **Unleash Next-Level Speed:** Add dynamic hammer action to accelerate your marble runs and outpace the competition. - • **Limitless Track Expansion:** Seamlessly integrate with the entire GraviTrax ecosystem for endless design possibilities. - • **Skill-Building Fun for Ages 8+:** Perfect gift to develop spatial reasoning and planning in curious young minds. - • **Instant Play, Clear Instructions:** Get building and racing within minutes with easy-to-follow guides. ## Overview The Ravensburger GraviTrax Hammer is a STEM-focused add-on accessory designed for kids 8 and up, enhancing marble run tracks by adding a powerful hammer mechanism that increases marble speed. Compatible with the expandable GraviTrax system, it promotes hands-on learning in physics and engineering while encouraging creativity and problem-solving. ## Description Ravensburger GraviTrax Hammer - Add On Extension Accessory Marble Run and Construction Toy For Kids Age 8 Years Up - STEM : desertcart.co.uk: Toys & Games ## Features - As seen on TV - GraviTrax is an innovative marble run and contruction toy for boys and for girls ages 8 years and up. It is an ideal christmas gift or birthday gift for smart, curious kids. The GraviTrax Hammer will add some much-needed velocity to your track layout. - Innovative - The GraviTrax interactive track system allows you to design and build your own race tracks and experiment with engineering, gravity, magnetism, and kinetics to propel your ball to the finish. - Infinitely Expandable - Gravitrax in fully expandable with a large range of expansion pack and accessories! An amazing building toy! - Develops critical skills – Playing and building with GraviTrax builds spatial reasoning and planning skills, and provides a great stealth learning experience. - Clear instructions – Comes with clear instructions so that you can start construction and start playing with this fun brain game within minutes ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07B7MWQ1Z | | Age Range Description | 8 years | | Best Sellers Rank | 69,705 in Toys & Games ( See Top 100 in Toys & Games ) 99 in Marble Runs | | Brand Name | GraviTrax | | Customer Reviews | 4.7 4.7 out of 5 stars (969) | | Educational Objective | Construction Skills, STEM Skills, Imagination | | Global Trade Identification Number | 04005556275984 | | Included Components | 1x Set of Instructions, 1x Hammer Base, 1x Long Rail, 2x Medium Rails, 3x Short Rails | | Item Dimensions | 19 x 19 x 4.8 centimetres | | Item Weight | 0.16 Kilograms | | Manufacturer | Ravensburger | | Manufacturer Part Number | 27598 | | Manufacturer Warranty Description | No Warranty | | Material Type | card | | Maximum Age Recommendation | 1188.0 | | Minimum Age Recommendation | 96.0 | | Model Number | 27598 | | Number of Items | 1 | | Number of Packs | 1 | | Set Name | GraviTrax Hammer | | Size | 19 cm x 19 cm x 4.8 cm | | Theme | STEM | | Unit Count | 1.0 count | ## Product Details - **Age range (description):** 8 years - **Brand:** GraviTrax - **Item dimensions L x W x H:** 19 x 19 x 4.8 centimetres - **Material:** card - **Size:** 19 cm x 19 cm x 4.8 cm ## Images ![Ravensburger GraviTrax Hammer - Add On Extension Accessory Marble Run and Construction Toy For Kids Age 8 Years Up - STEM - Image 1](https://m.media-amazon.com/images/I/71c4CxQbbDL.jpg) ## Frequently Bought Together - Gravitrax Ravensburger Hammer Accessory (Marble Run And Stem Toy), Multi-Colour, 8 +, 27598-4 - Ravensburger Gravitrax Magnetic Cannon Accessory - Marble Run & Stem Toy For Boys & Girls Age 8 & Up - Accessory For 2019 Toy Of The Year Finalist Gravitrax - GraviTrax Ravensburger Starter Kit (Marble Run And Stem Toy), Multi Colour, 8+, 27597, age: 8 years and up --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tw/products/83968378-ravensburger-gravitrax-hammer-add-on-extension-accessory-marble-run-construction](https://www.desertcart.tw/products/83968378-ravensburger-gravitrax-hammer-add-on-extension-accessory-marble-run-construction) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-08-18*