Wil sets of Krazy gears and funny bricks and wonder gears all interchange?

I am sorry, but I do not know the answer to this. I only have the Krazy gears at this time.

I don't know for certain but based on the quality of these, my guesstimate is that VERY LITTLE consideration went into safety of these. It is a complete waste of money. The quality is as bad as the worst you can get. I typically buy wooden toys for my twin toddlers but the "gears" were something I thought would be challenging for them. I bought two sets and because I sent them by shipping company to me to Europe, it was too costly to return them. In the trash they went. Don't waste your money. MagnaTiles are a much better long lasting ( yet more expensive) alterntive that will last and keep them interested forever!

Where can I get a replacement piece for a missing piece that it didn't come with?

Well, I would think that AMAZON/Gear Building Toy Co. should send that to you at "NO CHARGE".

Will these parts fit with learning resources gears gears gears! building sets?

No they will not. We have sets like this and we also have the learning resource gears. It is too late for me to return them or I would have so the gears could be used together for me creativity and fun. I will say that while the learning recourses are a little more pricey they seem much easier for my girls (3 and & 5 years) to use.

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Krazy Gears Gear Building Toy Set - Interlocking Learning Blocks - Motorized Spinning Gears - 81 Piece Playground Edition By Krazy Gears - Kids, Multicolor

Krazy Gears Gear Building Toy Set - Interlocking Learning Blocks - Motorized Spinning Gears - 81 Piece Playground Edition By Krazy Gears - Kids, Multicolor

Product ID: 87236162

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🌈Vibrant multicolor design

🔋Motorized with AA battery power

⚙️81 precision interlocking pieces

Description

⚙️ Spin Your Imagination Into Reality!

POWERED PLAY - Motorized spinning gears bring your creations to life without complex assembly
VIBRANT LEARNING - Multicolor pieces stimulate visual engagement and cognitive development
COMPACT PORTABLE - Lightweight 381g design fits perfectly on any desk or play area
BUILD BEYOND LIMITS - 81 interlocking gears for endless creative configurations
READY OUT OF THE BOX - No assembly required—start building and spinning immediately

The Krazy Gears Gear Building Toy Set features 81 multicolor interlocking plastic gears powered by a single AA battery. Designed for quick, no-assembly fun, this motorized playground edition encourages STEM learning and creative play for kids, all packed in a compact, lightweight set.

Specifications

Language:	English
Model Number	FBA_PlaygroundEdition
Number of Puzzle Pieces	81
Assembly Required	No
Batteries Required	No
Batteries Included	No
tech_spec_battery_description_toys	AA battery
Material Type(s)	Plastic
Colour	Multicolor
Product Dimensions	7.62 x 5.08 x 5.08 cm; 381 g
Batteries	1 AA batteries required.
Item model number	FBA_PlaygroundEdition
Manufacturer	Krazy Gears
Country of Origin	India
Item Weight	381 g

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