Yes. Used it with 2.5 year olds and most of them could manipulate without any problems. Could probably use with children even younger. Very good for building small motor skills.

Does this have a whole going through the middle?

There's not a hole through the middle.

How big is each gear?

they are fairly small. I'd say 2"

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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RAINBOW TOYFROG Interlocking Gears Toys - 100-Piece Kit with Tote - Colorful Manipulatives for Sensory Bin or Occupational Therapy - STEM Building Toys for Kids

Product ID: 224814579

🎨10 vivid colors for creative play

👐Perfectly sized for fine motor skill growth

🧩100 vibrant interlocking gears

Description

🛠️ Snap, Spin, and STEM Your Way to Genius Playtime!

COLOR YOUR WORLD - 10 bright, distinct colors enhance color recognition and sorting skills while sharing the fun.
ON THE GO GENIUS - Comes with a handy tote bag to keep all 100 pieces organized and ready for anytime inspiration.
BUILD BRILLIANTLY - 100 durable, snap-together gears spark endless STEM creativity and problem-solving.
INCLUSIVE PLAYTIME - Safe, gender-neutral design perfect for toddlers through older kids and even therapeutic use.
MASTER MOTOR SKILLS - Designed to boost fine motor coordination, hand-eye dexterity, and concentration effortlessly.

The RAINBOW TOYFROG 100-piece interlocking gear set is a vibrant, STEM-focused building toy designed to enhance fine motor skills, color recognition, and cognitive development. Featuring 10 colors and a portable tote, it encourages creativity, problem-solving, and focused play for kids aged 3 to 7 and beyond, making it a perfect gift for young engineers and therapy sessions alike.

Specifications

ASIN	B071NHSF63
Age Range Description	Kid
Best Sellers Rank	155,475 in Toys & Games ( See Top 100 in Toys & Games ) 949 in Sorting, Stacking & Plugging Toys
Brand Name	RAINBOW TOYFROG
Colour	Rainbow
Customer Reviews	4.6 4.6 out of 5 stars (448)
Educational Objective	STEM
Indoor Outdoor Usage	Indoor
Is Assembly Required	No
Item Weight	0.82 Pounds
Manufacturer	RAINBOW TOYFROG
Manufacturer Part Number	TOYS
Material Type	Plastic
Maximum Age Recommendation	84
Minimum Age Recommendation	36.00
Model Number	K-CHL
Number of Packs	1
Number of Players	1
Operation Mode	Manual
Power Source	Manual
Set Name	Rainbow Lock Gear Building Set
Size	Medium, Small
Supported Battery Types	No batteries required
Theme	Construction
UPC	642954180003
Unit Count	100.0 count

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