What size basin waste backnut does this fit please? will this fit a standard bsp "one and a quarter inch" waste hex backnut (brass or plastic)?

This wrench fits one end 45mm the other end 50mm waste a wonderful tool only let down by not supplying a bar to turn it but this be easily done with a piece of rod or screwdriver

The image is a hexagonal box spanner. Real basin waste nuts are octagonal. Is the image simply generic or is this the wrong product for octogon nuts?

I can confirm that it is a hexagonal box spanner. I think some plastic backnuts are octagonal - although not all - and also some are 47mm and are too big for this spanner. If you buy a brass backnut it should fit and they are stronger than the plastic versions.

The brass backnut on my basin waste is 45mm acroos the flats and I want to know if this basin wrench/box spanner is the correct size. Please advise

I have used this product a lot and it has fitted all the wastes I have tried it on. Great buy 😊

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Monument 46mm x 50mm Waste nut Box Spanner

Product ID: 53632910

Details

Brand
Monument
Colour
Multi
Item length
50 Millimetres
Item weight
0.68 Kilograms
Material
Alloy Steel

📏50mm extended length for tight spots

🔧46mm & 50mm dual sizes

⚙️Bright plated alloy steel durability

E£ 3172

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered 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 EGYPT.

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Description

🔧 Unlock tight spots with ease—be the plumbing hero everyone envies!

TRUSTED BY PROS - Top-rated tool with 4.5 stars from 398 reviews—your go-to for plumbing fixes
SLIM LONG DESIGN - Extra length and thin profile reach awkward, tight plumbing spaces
TOMMY BAR COMPATIBLE - Holes designed to accept a tommy bar for superior torque leverage
DUAL SIZE PRECISION FIT - Two ends (46mm & 50mm) cover most waste nuts effortlessly
CORROSION RESISTANT BUILD - Bright plated alloy steel ensures lasting strength and rust resistance

The Monument 308L Waste Nut Box Spanner (46mm x 50mm) is a professional-grade, double-ended tool crafted from bright plated alloy steel. Its slim, elongated design is engineered to access and loosen stubborn waste nuts in confined plumbing spaces, compatible with a tommy bar for enhanced torque. Highly rated by users, it’s a must-have for maintenance, plumbing, and automotive repairs.

Specifications

ASIN	B01FG9UAFE
Best Sellers Rank	28,561 in DIY & Tools ( See Top 100 in DIY & Tools ) 13 in Box Spanners
Brand	Monument
Colour	Multi
Country of Origin	Taiwan
Customer Reviews	4.5 4.5 out of 5 stars (399)
EU Spare Part Availability Duration	1 Years
Finish	Polished
Global Trade Identification Number	05015375003087
Head Style	Box End
Included Components	308L Waste Nut Box Spanner 46 x 50mm
Item Length	50 Millimetres
Item Package Quantity	1
Item Type Name	308L Waste Nut Box Spanner 46 x 50mm
Item Weight	0.68 Kilograms
Jaw Capacity	50 Millimetres
Manufacturer	Monument
Manufacturer Warranty Description	None.
Material	Alloy Steel
Measurement Standard	Metric
Model Number	MON308
Number of Items	1
Number of Packs	1
Operation Mode	Mechanical
Part Number	MON308
Set Name	No Set

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.

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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.

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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

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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E£ 3172

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered 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 EGYPT.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews