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 shaft diameter

⚙️107 versatile pieces

Rp427390

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Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Unlock your DIY potential with every turn!

MULTI SIZE PULLEY RANGE - From 6mm to 36mm diameters to perfectly match your project needs
COMPLETE DIY POWERTRAIN KIT - 107 precision plastic pulleys & rubber belts for endless custom builds
BOOST YOUR ENGINEERING CREATIVITY - Ideal for RC cars, robots, airplanes & hands-on STEM learning
UNIVERSAL 2 MM SHAFT COMPATIBILITY - Seamlessly integrates with standard RC and robotics shafts
DURABLE PLASTIC RUBBER MATERIALS - Lightweight yet resilient components built for repeated use

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 for 2mm shafts. Perfect for DIY robotics, RC vehicles, and model enthusiasts, this versatile set supports creative engineering projects with durable, lightweight components.

Specifications

ASIN	B0777L2L7X
Best Sellers Rank	#106,965 in Toys & Games ( See Top 100 in Toys & Games ) #4 in RC Vehicle Drive Pulleys
Brand Name	EUDAX
Color	Yellow
Customer Reviews	4.3 out of 5 stars 463 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

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