What's the difference between the seventh and ninth choices in this listing?

The seventh is - 40 teeth/8mm bore, the ninth 60 teeth/8mm bore. The 60 teeth is bigger diameter than 40 teeth.

Can I use this for a Velec electric bike chain?

This is a Timing Belt Idler Pulley made from Aluminum. I did not use it on my project, but used pair of flanged ball bearings for the pulley I need. If your bike chain made from steel metal I wouldn't recommended to use as a pulley for it. Aluminum will be worn out very quick.

What is the flange diameter on these?

Flange diameter is 0.704" Flange thickness is 0.039" Belt Hub diameter is 0.473" Belt Hub width is 0.255"

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

3Dman GT2 16Toothless Bore 3mm 20Toothless Bore 5mm Aluminum Timing Belt Idler Pulley/Double Head for 3D Printer 6mm Width Timing Belt 20 Toothless Bore 5mm 20-05-0514-10

Product ID: 332344521

🔩5mm bore diameter for precise fit

⚙️20 toothless design for smooth belt glide

🛠️Lightweight 3g aluminum build

¥5990

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Description

⚙️ Upgrade your 3D printer’s heartbeat with flawless belt motion!

DURABLE YET LIGHTWEIGHT - Crafted from premium aluminum weighing only 3 grams, balancing strength with minimal added weight.
PRECISION FIT GUARANTEED - 5mm bore diameter engineered for a snug, wobble-free installation on GT2 6mm timing belts.
SEAMLESS BELT PERFORMANCE - Toothless 20-tooth design eliminates layer shifts and ensures ultra-smooth 3D printing results.
TRUSTED QUALITY SUPPORT - Backed by 3Dman’s responsive customer service and hassle-free replacement or refund policy.
VERSATILE INDUSTRIAL COMPATIBILITY - Perfect for CNC machines, milling, drilling, and 3D printers—upgrade your workflow effortlessly.

The 3Dman GT2 20 Toothless Bore 5mm Aluminum Timing Belt Idler Pulley is a precision-engineered, lightweight aluminum component designed for GT2 6mm wide timing belts. Its toothless design ensures smooth, jitter-free belt movement, ideal for 3D printers and various CNC machinery. With a 5mm bore for exact fit and a durable build, it enhances print quality and machine reliability, supported by a trusted brand with excellent customer service.

Specifications

ASIN	B07RV2T54M
ASIN	B07RV2T54M
Batteries Included?	No
Batteries Required?	No
Color	20 Toothless Bore 5mm
Customer Reviews	4.5 4.5 out of 5 stars (229)
Customer reviews	4.5 4.5 out of 5 stars (229)
Date First Available	11 June 2019
Date First Available	11 June 2019
Item Weight	40 g
Manufacturer	3Dman
Manufacturer	3Dman
Manufacturer reference	20-05-0514-10
Manufacturer reference	20-05-0514-10
Material	Aluminum
Measurement System	Metric
Package Dimensions	11.5 x 8.7 x 0.9 cm; 40 g
Package Dimensions	11.5 x 8.7 x 0.9 cm; 40 g
Part number	20-05-0514-10
Size	20 Toothless Bore 5mm

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

¥5990

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Abdullah B.

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

3 weeks ago

View all Trustpilot reviews