What is the external across the flats width of the 9mm spanner? Also the thickness of the spanner end material?

12mil externally. 2mil with regard to the material but because of the way they are pressed out this can vary a little.

Can these be joined together to extend the length of the one you need to use? I have a 14mm nut on a recess monobloc drinking water tap to remove?

Yes they can be but not every one of these fits the next level up i.e I tried fitting the smallest one into the next level and it did not fit but then tried fitting that into the 3rd one and it did fit.

Can these be used for spark plugs.

This set does not have a box spanner large enough for Auto spark plugs. But Silverline do sell a set to suit your needs.

How long area these, pls?

They range from 19cm to 12cm hope that helps

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Silverline 589709 Box Spanner Metric Set 6pce 8 - 19 mm, Silver

Silverline 589709 Box Spanner Metric Set 6pce 8 - 19 mm, Silver

Product ID: 50591266

Details

Brand
Silverline
Colour
Silver
Item length
19 Centimetres
Item weight
0.61 Kilograms
Material
Alloy Steel

📏Compact 19cm length for easy handling

🔩6 double-ended spanners, 8-19mm

⚙️Alloy steel durability

AR$62034

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Description

🔧 Unlock precision power with every turn!

BUILT TO LAST - Crafted from robust alloy steel ensuring long-lasting strength and resistance to wear.
COMPACT PORTABLE - At just 19cm length and 0.61kg weight, this set fits perfectly in your toolkit or drawer.
EFFORTLESS HANDLING - Unpolished finish and ergonomic design provide superior grip and control during use.
TRUSTED BY THOUSANDS - Rated 4.5 stars by over 5,200 professionals—join the community that demands quality.
PRECISION FIT EVERY TIME - Double-ended design covers 6 metric sizes (8-19mm) for versatile, exact torque application.

The Silverline 589709 Box Spanner Metric Set includes 6 double-ended spanners ranging from 8 to 19mm, made from durable alloy steel. Compact and lightweight, this set is designed for professional-grade torque application with a trusted 4.5-star rating from thousands of users.

Specifications

ASIN	B0015NPPGA
Best Sellers Rank	61,010 in DIY & Tools ( See Top 100 in DIY & Tools ) 26 in Box Spanners
Brand	Silverline
Colour	Silver
Customer Reviews	4.5 4.5 out of 5 stars (5,267)
Finish	Unpolished
Head Style	Hex
Included Components	1x Box Spanner Metric Set 6pce 8 - 19 mm
Item Length	19 Centimetres
Item Package Quantity	1
Item Torque	0.5 Newton Meters
Item Type Name	Box Spanner Metric Set
Item Weight	0.61 Kilograms
Jaw Capacity	19 Millimetres
Manufacturer	SLTL4
Material	Alloy Steel
Measurement Standard	Metric
Model Number	589709
Number of Items	6
Operation Mode	Mechanical
Part Number	589709
Set Name	Silverline Metric Box Spanner Set (6 Piece)

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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.

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TrustScore 4.5 | 7,300+ reviews

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AR$62034

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered 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 Argentina.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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