What type of plastic are these made out of?

Typical plastic gears. Not a hard rubber. Good to have if you ever need a backup.

What size hole is in the gears? Are they all the same?

they vary from.0625 or 1/16 to .115 or 2.875mm that not any standard everything is +or- .003 there is no standard that they match,the plus or minus .003 is the test on my parts that i have

i need a double gear with 22 teeth at 14mm diameter and 12teeth at 10mm do you have please?

Hi thanks for your question. This is link of the size and specification of each gear → https://mega.nz/#F!BdpFVaZA!QzSstICCpv1_ZAt5UIaAPQ Any other question please feel free to contact us through email kuyiuss@outlook.com. We will always happy to help you out. Thank you!

ddoes this work for a goovi d380 ?

Hi, thanks for your question. This is the the size and specifications of each gear. Please have a look. https://mega.nz/#F!BdpFVaZA!QzSstICCpv1_ZAt5UIaAPQ

Plastic Gear Set 75pcs Single Double Reduction Gear Worm Gear

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Description

⚙️ Gear up your DIY game with the ultimate 75-piece transmission toolkit!

PERFECT STEM COMPANION - Ideal for labs, science education, and robotics projects
ALL IN ONE GEAR ARSENAL - 75 precision plastic gears for endless DIY innovation
BOOST YOUR CREATIVE EDGE - Unlock advanced mechanical designs with a comprehensive gear set
DURABLE LIGHTWEIGHT MATERIAL - High-quality plastic ensures smooth operation and longevity
VERSATILE TRANSMISSION OPTIONS - Includes crown, single, double, and worm gears for complex builds

The AUKUYEE Plastic Gear Set offers 75 high-quality plastic gears including crown, single, double reduction, and worm gears, designed for DIY car and robot projects. Perfect for STEM education and hobbyists, this versatile set supports complex mechanical builds with durable, lightweight components.

Specifications

ASIN	B06XCG24HZ
Best Sellers Rank	#71,100 in Toys & Games ( See Top 100 in Toys & Games ) #14 in Toy Interlocking Gear Sets
Brand Name	AUKUYEE
Customer Reviews	4.1 4.1 out of 5 stars (342)
Included Components	GEARS
Manufacturer	AUKUYEE
Material Type	Plastic
Model	QY12
Part Number	QY12

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