Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 18 - Jun 23
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Description
Springer Spiral Spring Science KitExplore the secret of clockwork mechanisms. Discover spring power! Have you ever wondered about the power source of a wind up car or where the ticking sound of a clock comes from? The secret lies in the mainspring. Centred on the clockwork is a spiral torsion spring where you will be able to store energy by winding it tightly. Then release it to trigger the inner mechanical operation and watch your spring timer, spring car or spring bot start moving!
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 1386 reviews
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Product Reviews
★★★★★ 5
Great mid-weight comforter
Size: King, Style: Light
Great comforter, especially for the price. I put it in the dryer for a bit when I first got it and it became nice and fluffy. Perfect mid-weight duvet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
★★★★★ 3
Se miran más lindos en fotos, material muy bueno eso si
Color: 1709 - Black, Size: 49
La verdad ni me gustan del todo los veo medios pequeños , se mira an más lindo en la foto y cuando te los pruebas en la cámara eso si el material muy bueno
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Love these!
Color: Black, Size: 51/17/145
Great look and affordable.
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Reviewed in the United States on January 6, 2026
★★★★★ 5
Lentes graduables
Color: Black, Size: 51/17/145
Súper finos y lindos
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Reviewed in the United States on December 8, 2025
★★★★★ 5
Corren pequeños
Color: Black, Size: 51/17/145
Corren pequeños!
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Reviewed in the United States on December 4, 2025
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