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

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Description

⚙️ Unlock your inner engineer with the ultimate gear set!

READY TO BUILD - No batteries needed—just pure mechanical fun and endless customization.
DIVERSE GEAR TYPES - Includes single, double, crown, worm, bevel gears & more for limitless mechanical creativity.
IDEAL FOR STEM DIY - Engineered for educational labs, robotics, and model building to elevate your technical skills.
LIGHTWEIGHT COMPACT - Only 68g and fits neatly in a 5x10x5 cm package—perfect for on-the-go projects.
ALL IN ONE GEAR ARSENAL - 75 precision plastic gears and accessories to fuel your DIY innovation.

This 75-piece plastic gear set by AUKUYEE (model QY12) offers a comprehensive collection of single, double, crown, worm, bevel gears, and transmission parts. Lightweight and compact, it’s designed for DIY enthusiasts, educators, and robotics hobbyists seeking versatile, high-quality components to build and innovate mechanical models without the need for batteries.

Reviews

T**R

Gear I've tried so far are good. Conclusion: I'm happy.

12.11.2018

M**.

seems to be a nice variety of gears, just as the image shows. i have not counted the lot, but it seems to be the right amount.

15.11.2025

A**R

Product works great. Just wish there were more duplicates of each type of gear.

9.03.2018

D**G

Excellent group of gears at a great price. This allows me to tackle a few projects right away

8.02.2026

L**F

Gears were smaller than I thought they would be.

3.09.2025

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