Are these v or u groove? some pics suggest v groove. also how wide is the groove?

They look like U type. The ones I bought were U type

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UCTOP Store 4Pcs Round Groove Nylon Pulley U Groove Track Roller Bearing (6 * 21 * 7mm (4 Pcs))

UCTOP Store 4Pcs Round Groove Nylon Pulley U Groove Track Roller Bearing (6 * 21 * 7mm (4 Pcs))

Product ID: 129278269

Details

Brand
MonLiya
Material
Nylon
Item weight
0.02 Kilograms
Item thickness
7 Millimetres
Bearing type
Ball Bearing

🔄Smooth deep groove ball bearing

⚙️Precision 6x21x7mm size

🛠️Durable nylon for versatile use

154.56 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Details

Brand
MonLiya
Material
Nylon
Item weight
0.02 Kilograms

Description

🔧 Glide into effortless efficiency with UCTOP’s precision pulleys!

READY FOR ACTION - Pack of 4 pulleys means you’re equipped to tackle multiple projects or replacements instantly.
COMPACT YET MIGHTY - Precisely sized at 6mm ID x 21mm OD x 7mm thickness, fitting perfectly into a variety of hardware applications.
LIGHTWEIGHT DURABILITY - Crafted from high-quality nylon, these pulleys offer long-lasting wear without adding bulk.
VERSATILE COMPATIBILITY - Ideal for furniture, sliding doors, drawers, and shower pulleys—upgrade your space with ease.
ENGINEERED FOR SEAMLESS MOTION - Deep groove ball bearings ensure ultra-smooth sliding and minimal friction for premium performance.

The UCTOP Store 4Pcs Round Groove Nylon Pulley set features 6x21x7mm deep groove ball bearings made from durable nylon, designed for smooth, flexible sliding in furniture hardware, sliding doors, drawers, and more. ISO 1206 certified and grease-compatible, these lightweight pulleys deliver reliable performance across multiple applications.

Specifications

ASIN	B07KR5ZQ1X
Bearing Number	1247
Bearing Type	Ball Bearing
Bearing number	1247
Brand	MonLiya
Compatible Lubricant	Grease
Customer Reviews	4.2 out of 5 stars 109 Reviews
Item Thickness	7 Millimetres
Item Weight	0.02 Kilograms
Item thickness	7 Millimetres
Item weight	0.02 Kilograms
Manufacturer	UCTOP STORE
Manufacturer Part Number	1247
Material	Nylon
Model Number	1247
Specification Met	ISO 1206
Specification met	ISO 1206

Reviews

K**L

Exactly as described good value for money. Could be used for many applications.

Great little item. Used it for a guide wheel for a jig intended for grinding a straight edge. Arrived promptly. Many thanks.

22.02.2021

I**N

Fast delivery

Very good

8.01.2020

D**G

Good item

Done the job. Nothing special but not bad

7.04.2020

M**N

Good gravity rollers

For my boat

16.03.2022

D**A

rapidez en el envio

es exactamente lo que ponia en el catalogo

6.07.2020

C**N

ottime per rimettere in sesto armadi vecchi

ho usato il prodotto per rimettere in sesto il sistema di scorrimento di un vecchio armadio con porte scorrevoli con meccanismi della vecchia generazione. ottimo consiglio di contollare sempre le misure di perno e spessore ruota

5.12.2021

O**R

Gute Rollen

Ich konnte die Rollen an dem Gewächshaus Tür einbauen

1.05.2025

E**H

Roulettes

Ne convient pas et j'aimerais les retourner

7.02.2025

A**M

Super Preisleistungsverhältnis

Gut verarbeitet

16.11.2020

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3 weeks ago

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154.56 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Yusuf A.

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1 month ago

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