How long are the rubber bands? the diameter listed seem really small but the black rubber band looks long

The blacks are long but I am not sure of the other I gave them away.

is the dia hole 1mm or 2mm ?

Dear friend We are an Amazon seller. The middle mounting hole of the plastic pulley we sell is 1.95mm, which is suitable for 2mm shaft. You can buy our 2mm shaft for testing (https://www.amazon.com/dp/b07d2wsf29). The other two hole diameters of the three hole pulley are 1.95mm 2.05mm, and the other hole diameters of the nine hole pulley are 4 1.95mm and 4 2.1mm, such as If you have any problem in purchasing our products, you can contact us directly. We will solve all your worries for you. Thank you very much. Have a good life Best wishes Eudax customer service team

Eudax 2mm Hole Plastic Belt Pulley Gears Combination Modulus Package

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Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Gear up your DIY game with precision and variety!

DIVERSE DIAMETER RANGE - From 6mm to 36mm pulleys and 20mm to 70mm belts, customize your build with exact mechanical control.
ULTIMATE DIY POWER PACK - 107 versatile pulleys & belts to fuel your creative robotics and RC projects.
HANDS ON ENGINEERING MASTERY - Perfect for millennial makers aiming to sharpen mechanical skills and impress their tech-savvy peers.
PRECISION FIT FOR 2 MM SHAFTS - Engineered for seamless integration with standard 2mm motor shafts—no guesswork needed.
DURABLE PLASTIC RUBBER BUILD - Lightweight yet robust materials ensure long-lasting performance in your animatronics and models.

The EUDAX 2mm Hole Plastic Belt Pulley Gears Combination Kit offers 107 high-quality plastic pulleys and rubber belts in 9 pulley sizes and 7 belt lengths, designed specifically for 2mm shaft diameters. Ideal for DIY robotics, RC cars, airplanes, and animatronics, this kit provides versatile, durable components that empower creative engineering and hands-on learning.

Specifications

ASIN	B0777L2L7X
Best Sellers Rank	#53,046 in Toys & Games ( See Top 100 in Toys & Games ) #1 in RC Vehicle Drive Pulleys
Brand Name	EUDAX
Color	Yellow
Customer Reviews	4.3 out of 5 stars 458 Reviews
Educational Objective	Teaching mechanical engineering principles, creativity, and problem-solving skills through hands-on learning
Is Assembly Required	No
Item Weight	0.05 Kilograms
Manufacturer	EUDAX
Manufacturer Maximum Age (MONTHS)	216
Manufacturer Minimum Age (MONTHS)	96.00
Manufacturer Part Number	EUDAX-107BP-KIT
Material Type	Plastic, Rubber
Operation Mode	Manual
Power Source	Manual
Set Name	EUDAX 2mm Hole Plastic Belt Pulley Gears & Rubber Belts Accessories Set (107 Pieces)
Supported Battery Types	No batteries required
Theme	DIY Robotics and Vehicles
UPC	756155716890
Unit Count	107.0 Count

Reviews

E**D

25.01.2025

P**N

10.11.2023

B**Y

4.08.2024

J**Z

6.12.2023

O**O

13.10.2025

G**Y

5.04.2024

W**S

11.02.2020

B**H

12.08.2024

A**.

24.02.2021

N**G

9.01.2020

S**!

3.09.2020

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