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

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EUDAX 2mm Hole Plastic Belt Pulley Gears Combination Modulus Package Rubber Belts Band Plastic Model Accessories for DIY Robots Cars RC Toy Car Airplane

EUDAX 2mm Hole Plastic Belt Pulley Gears Combination Modulus Package Rubber Belts Band Plastic Model Accessories for DIY Robots Cars RC Toy Car Airplane

Product ID: 51999535

📏9 pulley sizes 6-36mm

🔧Fits 2mm shafts

⚙️107 versatile parts

Bs.405

Duties & taxes included

In stock

Sold byAmazon BoliviaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Gear up your creativity—build smarter, faster, better!

DURABLE LIGHTWEIGHT - High-quality plastic and rubber materials ensure long-lasting, smooth operation
ULTIMATE DIY POWER PACK - 107 precision plastic pulleys & rubber belts for flawless RC & robot builds
PLUG PLAY COMPATIBILITY - Designed for 2mm motor shafts—seamless integration with your projects
HANDS ON ENGINEERING MASTERY - Ideal for millennial makers aiming to innovate with RC cars, drones, and animatronics
SIZE DIVERSITY FOR PERFECT FIT - 9 pulley diameters and 7 belt lengths to customize every mechanical need

The EUDAX 2mm Hole Plastic Belt Pulley Gears Combination Kit offers 107 durable plastic pulleys and rubber belts in 9 pulley sizes (6mm to 36mm) and 7 belt lengths, all designed to fit 2mm motor shafts. Perfect for DIY enthusiasts and professionals building RC cars, robots, and animatronics, this kit delivers versatile, lightweight components that enhance mechanical precision and creativity.

Specifications

ASIN	B0777L2L7X
Best Sellers Rank	#103,291 in Toys & Games ( See Top 100 in Toys & Games ) #5 in RC Vehicle Drive Pulleys
Brand Name	EUDAX
Color	Yellow
Customer Reviews	4.3 4.3 out of 5 stars (464)
Educational Objective	Teaching mechanical engineering principles, creativity, and problem-solving skills through hands-on learning
Item Weight	0.05 kg
Manufacturer	EUDAX
Manufacturer Maximum Age (MONTHS)	216
Manufacturer Minimum Age (MONTHS)	96
Manufacturer Part Number	EUDAX-107BP-KIT
Material Type	Plastic, Rubber
Model Number	EH-107BP-KIT
Number of Packs	1
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 Count

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Great price for an authentic product. Fast international shipping too!

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