what is the module of these gears?

I don't know. It is not printed on the gears anywhere and I cant honestly see well enough right now to count the teeth. their pretty small. so I don't know.

The promotional codes 5fmsmqp8 and 9l4wnv7 didn't work as i tried them, and none made any differences at all! why? will you fix the issues?

I feel this question is either for Amazon or the supplier, I don’t think I could help.

do you have suggested things you could make w/ these for 7 year old ?

My 7 year old and I made a car using posicle sticks and a glue gun in addition to the kit. Since the gears are so small the tollerance for placing them correctly is pretty tight. My 7 year old wasn't able to line up the axle holes by himself and still have the gears mesh. With adult help and immagination you could make all kinds of contraptions.

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EUDAX 82 pcs Plastic Gear Package Kit - DIY Gear Assortment Accessories Set for Toy Motor Car Robot Various Axle Belt Bushings

EUDAX 82 pcs Plastic Gear Package Kit - DIY Gear Assortment Accessories Set for Toy Motor Car Robot Various Axle Belt Bushings

Product ID: 504208166

📏Axles in 4 precise lengths (30-100mm)

🔧Multi-functional DIY kit for toys & robots

⚙️82 pcs versatile gear set

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163 zł

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Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Unlock your inner engineer with the ultimate DIY gear kit!

MULTI USE DIY POWERHOUSE - Ideal for toy cars, robots, motors, and mechanical prototypes
DIVERSE GEAR TYPES INCLUDED - Single/double crown, bevel, copper, rack & more for complex builds
COMPACT LIGHTWEIGHT DESIGN - Only 68g with a sleek 14.5x8.9x2.5cm package—easy to store & transport
PRECISION AXLES IN FOUR SIZES - 30mm to 100mm shafts with consistent 2mm diameter for perfect fit
COMPLETE 82 PIECE GEAR ARSENAL - Everything from pulleys to crown gears for limitless creativity

The EUDAX 82 pcs Plastic Gear Package Kit is a comprehensive DIY accessory set featuring a wide range of gears, axles, pulleys, bushings, wheels, and rubber bands. Designed for precision and versatility, it includes axles in four lengths (30-100mm) with a consistent 2mm shaft diameter, multiple gear types including crown and bevel gears, and components ideal for building toy cars, robots, and mechanical models. Lightweight and compact, this kit fuels creativity and hands-on learning for hobbyists and professionals alike.

Specifications

ASIN	B0776ZPP7V
Age Range Description	Kid
Best Sellers Rank	935,784 in Toys & Games ( See Top 100 in Toys & Games ) 90 in Toy Interlocking Gear Sets
Brand Name	EUDAX
Colour	Assorted
Customer Reviews	4.2 4.2 out of 5 stars (438)
Educational Objective	Literacy & Spacial Awareness
Indoor Outdoor Usage	Indoor
Is Assembly Required	Yes
Item Dimensions	14.5 x 8.9 x 2.5 centimetres
Item Weight	68 g
Manufacturer	EUDAX
Manufacturer Part Number	EH-GEAR-82KIT
Material Type	Plastic, Rubber
Minimum Age Recommendation	96.00
Number of Players	1
Operation Mode	Manual
Power Source	manual winding
Size	S
Subject Character	Robot
Supported Battery Types	No batteries required
Theme	Car,Robot
UPC	756155716883

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