







🧩 Screw, stack, and learn—where play meets brainpower!
The SIENIANLINE 32 pcs Nuts and Bolts Stacking Toy is a vibrant, Montessori-inspired STEM learning set designed for preschoolers. Featuring 4 colors and shapes across 32 durable plastic pieces, it promotes fine motor skills, color and shape recognition, and spatial reasoning. Lightweight and portable, it’s perfect for early childhood development and makes a thoughtful gift that blends education with fun.





| ASIN | B0B3XK3H3N |
| Assembly Required | Yes |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 12,337 in Toys & Games ( See Top 100 in Toys & Games ) 122 in Sorting, Stacking & Plugging Toys |
| Colour | Multicoloured |
| Customer Reviews | 4.4 4.4 out of 5 stars (342) |
| Date First Available | 24 July 2022 |
| Educational Objective(s) | STEM |
| Item model number | NS-N519K |
| Manufacturer recommended age | 3 years and up |
| Material Type(s) | Plastic |
| Number of Game Players | 1 piece |
| Number of pieces | 32 |
| Product Dimensions | 23 x 28 x 6 cm; 370 g |
M**E
Seriously impressed with these!
Really lovely set of nuts and bolts STEM toys, chunky, excellent for little fingers offering varying size if each colour, which I had not realised. I think we will have many an enjoyable time playing, colour and shape sorting, stacking and screwing them on and off too. Got them for £9.99, so didn't hesitate, not sure how often they are this price, but having found and got them, I am more than happy. They come in a zippy bag for storage, but also easy to use the box again, or another container.
G**S
Great for elderly who need to work on dexterity
Bought these for mum, who suffered a stroke many years ago and has right side paralysis and dexterity issues with her right hand. Almost impossible to find 'toys' for her to help her with her strength and to keep her occupied (either the products available are for dementia sufferers, or for children). This nuts / bolts are brilliant, keep her occupied, and require her to use both her hands to undo / redo each nut + bolt.
L**I
Cognitive development toy
Good product. Useful for cognitive development. Value for money.
M**.
Good quality
Bought these because they were on the nursery wishlist, I assume they are fine because the nursery children play with them
R**E
Good value for money
I had to return this item as the parts were too small for the child in question.
S**A
Good for Autism kids
We have Asd child. This toy helps him to recognise Color’s, fine operation. The quality is very good. I would recommend this to all parents.
L**N
Good toy for dexterity
Liked the bright colours. Great for teaching colours to little ones. Also great for helping little ones learning how to make things work.
A**R
Super nuts and bolts
Perfect size for little hands. Used to develop hand and finger strength and dexterity. Used in our EYFS setting at our ‘funky finger’ station.
A**Y
Die Schrauben und Muttern sind sehr gut verarbeitet. Selbst für unseren einjährigen Sohn ist es kein Problem die Mutter von der Schraube zu drehen. Eine eindeutige Kaufempfehlung von uns.
M**E
Bonjour , correspond bien à mes attentes . Educatif , nickel. Cordialement
L**A
A mí niño le encanta jugar con esto.
T**V
Ottimo gioco per bambini. Ottima qualità.
B**E
Ve lo garantisco, ottima qualità, pezzi grandi e lucidi. Rifiniti bene, non ci sono scheggie di plastica quindi i pezzi sono sicurissimi per bimbi e grandi!
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