How do I select the length of the spacer???

Size name is the length of the spacers.

If I would buy the m8, 20mm,eould it be possible to swap out 2 for the 10mm?

Unfortunately not. those are prepacked items.

Hi I need 2 x spacers to convert a 20mm hole to internal diameter 8mm on a wheel, what should I order pls

You will need a spacers with OD 20mm, our M8 Spacers have 15.5mm. You can get M10 with OD 20mm but the hole is 10.5mm.

Are these made of solid plastic? I want to use them as part of a foot arrangement. Thanks

They have a hole to allow a screw through them length wise but they are pretty solid - you can't bend or squash them easily.

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12pcs. x M6 x 20mm Black Nylon Spacers and Standoff Washers for M3, M4, M5, M6, M8 Screws, Lengths 3mm to 30mm

12pcs. x M6 x 20mm Black Nylon Spacers and Standoff Washers for M3, M4, M5, M6, M8 Screws, Lengths 3mm to 30mm

Product ID: 165768531

Details

Exterior finish
Black
Fastener size
M3 M4 M5 M6 M8
Material
Nylon
Outside diameter
12 Millimetres
Washer type
Standoff

🔧Fits M3 to M8 screws

⚙️12pcs versatile sizes 3-30mm

🛡️Non-conductive & corrosion-resistant

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your DIY game with spacers that stand out!

LIGHTWEIGHT YET DURABLE - Crafted from high-quality nylon for strength without the weight or rust of metal spacers.
MULTIPURPOSE DIY ESSENTIAL - Perfect for electronics, furniture assembly, and custom projects — 12 pieces to cover all your needs.
ELECTRICAL THERMAL INSULATION - Nylon material provides excellent insulation, protecting your electronics and machinery.
PRECISION FIT FOR EVERY PROJECT - Compatible with M3, M4, M5, M6, and M8 screws ensuring seamless integration.
VIBRATION DAMPENING NOISE REDUCTION - Ideal for machinery and moving parts, these spacers reduce unwanted noise and wear.

This pack of 12 black nylon spacers and standoff washers offers versatile lengths from 3mm to 30mm, compatible with M3 to M8 screws. Made from durable, lightweight nylon, they provide superior corrosion resistance, electrical insulation, and vibration dampening—perfect for professional-grade DIY, electronics, and machinery applications.

Specifications

ASIN	B07QV26Z88
Best Sellers Rank	4,004 in DIY & Tools ( See Top 100 in DIY & Tools ) 6 in Spacers
Brand Name	Universal Hardware
Colour	Black
Compatible Groove Diameter	6.3 Millimeters
Country Of Origin	Netherlands
Customer Reviews	4.5 4.5 out of 5 stars (550)
Exterior Finish	Black
Fastener Size	M3, M4, M5, M6, M8, M10
Fastener Type	Flat Washer
Grade Rating	Standard
Inside Diameter Tolerance	0.1 Millimetres
Item Thickness	3 Millimetres
Manufacturer	Fasteners Store
Manufacturer Part Number	Black Nylon Spacers
Material Type	Nylon
Number Of Items	12
Number of Pieces	12
Outside Diameter	12 Millimetres
Screw Head Style	Round
Size	20mm
Unit Count	12.0 count
Washer Type	Standoff

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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.

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476499₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered 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 Vietnam.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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