STEM assembly toy

Cards view:

Filters and sort

Playable Pinball Machine Building Set – 2,309 Pieces, LED Lights, Music & Motor | Mechanical Building Kits | BrickRoyal Playable Pinball Machine Building Set – 2,309 Pieces, LED Lights, Music & Motor | Mechanical Building Kits | BrickRoyal
Playable Pinball Machine Building Set – 2,309 Pieces, LED Lights, Music & Motor
$117.00
$117.00
Border Collie Brick Model – Poseable Dog with Wagging Tail Building Set | Mechanical Building Kits | BrickRoyal Border Collie Brick Model – Poseable Dog with Wagging Tail Building Set | Mechanical Building Kits | BrickRoyal
Border Collie Brick Model – Poseable Dog with Wagging Tail Building Set
$29.99
$29.99
Four-Wing Space Starfighter Building Kit | Mechanical Building Kits | BrickRoyal Four-Wing Space Starfighter Building Kit | Mechanical Building Kits | BrickRoyal
Four-Wing Space Starfighter Building Kit
$119.00
$119.00
1:8 Streetfighter Motorcycle Building Kit | Mechanical Building Kits | BrickRoyal 1:8 Streetfighter Motorcycle Building Kit | Mechanical Building Kits | BrickRoyal
1:8 Raceforge Motorcycle Building Set – 533 Pcs Olive Green Building Blocks
$69.00
$69.00
Streetfighter Motorcycle Building Block Set – 1:8 Scale 582 Pcs Building Blocks | Mechanical Building Kits | BrickRoyal Streetfighter Motorcycle Building Block Set – 1:8 Scale 582 Pcs Building Blocks | Mechanical Building Kits | BrickRoyal
Streetfighter Motorcycle Building Block Set – 1:8 Scale 582 Pcs Building Blocks
$69.00
$69.00
1:8 Motorcycle Building Set – 562 Pieces | BrickRoyal | Mechanical Building Kits | BrickRoyal 1:8 Motorcycle Building Set – 562 Pieces | BrickRoyal | Mechanical Building Kits | BrickRoyal
1:8 Motorcycle Building Set – 562 Pieces | BrickRoyal
$39.00
$39.00
BRICKROYAL 944-piece cyberpunk mantis building kit with intricate internal gear structure, custom transparent PVC wings and fully movable limbs. Compatible with add-on 2.4G remote power set for motorized crawling. Designed for ages 14+, perfect for mechanical assembly, shelf decoration and tech enthusiast gifts. Cyberpunk Bionic Mantis Building Blocks
Cyberpunk Bionic Mantis Building Blocks
From $129.00
From $129.00
Three-Headed Mechanical Dragon Building Set | Mechanical Building Kits | BrickRoyal Three-Headed Mechanical Dragon Building Set | Mechanical Building Kits | BrickRoyal
Three-Headed Mechanical Dragon Building Set
$419.00
$419.00
Build a Welsh Corgi That Sits, Stands, and Steals Your Desk Building Set | Mechanical Building Kits | BrickRoyal Build a Welsh Corgi That Sits, Stands, and Steals Your Desk Building Set | Mechanical Building Kits | BrickRoyal
Build a Welsh Corgi That Sits, Stands, and Steals Your Desk Building Set
$29.90
$29.90
Meet the Shiba Inu That Never Needs a Walk – A Brick Companion for Your Desk Building Set | Mechanical Building Kits | BrickRoyal Meet the Shiba Inu That Never Needs a Walk – A Brick Companion for Your Desk Building Set | Mechanical Building Kits | BrickRoyal
Meet the Shiba Inu That Never Needs a Walk – A Brick Companion for Your Desk Building Set
$23.90
$23.90
Red-Black Mechanical Brick Motorcycle Building Set | Mechanical Building Kits | BrickRoyal Red-Black Mechanical Brick Motorcycle Building Set | Mechanical Building Kits | BrickRoyal
Red-Black Mechanical Brick Motorcycle Building Set
$169.00
$169.00
Motorized H2 Boxer Engine Building Set | Mechanical Building Kits | BrickRoyal Motorized H2 Boxer Engine Building Set | Mechanical Building Kits | BrickRoyal
Motorized H2 Boxer Engine Building Set
$169.00
$169.00
💳

Flexible Payments

Pay with PayPal, Visa, Mastercard & more.

🔒 Secure Checkout
🔄

30-Day Returns

Risk-free returns if you're not satisfied.

✅ Hassle-free
🇺🇸

Free U.S. Shipping

Free shipping within the United States only.

🇺🇸 U.S. Only
🎧

24/7 Customer Support

Real human support anytime you need help.

💬 Live Support

⚙️ ENGINEERED FOR COLLECTORS

✦ PREMIUM MECHANICAL BUILDING MODELS

✦ BUILT FROM IMAGINATION

✦ DESIGNED FOR DISPLAY