BAHCO 4040M-21-23 knee spanner with Dynamic-Drive profile, chrome-plated, length 306 mm, 21 mm x 23 mm

Name: BAHCO 4040M-21-23 knee spanner with Dynamic-Drive profile, chrome-plated, length 306 mm, 21 mm x 23 mm
Brand: BAHCO
SKU: 41850594
Price: 48.2 EUR
Availability: PreOrder

Supplier number: BAHCO 4040M-21-23 | EAN 7314151078348

Recommended Retail Price €90.87

48.20 tax incl.

€39.83 excl. VAT (incl. all environmental contributions)

On order: delivered from 09/10/2026

Ordered before 20:00 - delivered as of 09/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Lifetime warranty on Bahco? Or limited in time? Read more about it here.
Delivered from Belgium

✆ Talk to a specialist

Smooth fastener access with Bahco engineering

Practical benefits

Swivel heads for tight spaces: The 180° pivoting heads ensure you easily access fasteners located in confined areas.
Reliable fastener flank protection: The Dynamic-Drive profile grips firmly on the sides to prevent you from rounding bolts.
Durable chrome plated finish: High-performance alloy steel with a micro-matte chrome finish gives you long-lasting protection against corrosion.

In a nutshell

The right choise for

With the Bahco 4040m-21-23 flex-head socket wrench, you can easily reach bolts and nuts in tight and awkward spots. The 180° swivelling heads allow you to work at flexible angles where a standard wrench or ratchet cannot sweep. Featuring a 12-point Dynamic-Drive profile, it applies torque directly to the fastener flanks rather than the corners, effectively preventing wear and rounding. Combining 21 mm and 23 mm socket sizes, this tool is ideal for maintenance and repair tasks on engine blocks, chassis, and industrial machinery. Forged from high-performance alloy steel with a chrome-plated finish, it delivers long-lasting durability and corrosion resistance for demanding workshop applications.

Product information FAQ

€48.20

tax incl.

Key features according to our expert

Width across flats 1: 21 mm
Width across flats 2: 23 mm
Key type: Socket wrench
Length: 333 mm

Product description:

Double ended flex-head wrenches with double hexagon sockets in metric sizes
Material: High performance alloy steel
Chrome plated Micro Matt finishing provides high quality surface
12 points Dynamic-Drive Profile provides longer life for screws and nuts
Both heads 180º swivelling. New design of the sockets for better accessibility
Retail packed on a plastic card

All Features

Width across flats 1: 21 mm
Width across flats 2: 23 mm
Key type: Socket wrench
Length: 333 mm
Width head 2 mm (d2): 30,5 mm
Width head 1 mm (d1): 27,8 mm
Length mm (l): 306 mm
Weight g: 490 g
Size mm: 21x23 mm

Brand BAHCO
41850594
EAN 7314151078348
Supplier number BAHCO 4040M-21-23
Warranty Lifetime warranty on Bahco? Or limited in time? Read more about it here.

Frequently asked questions about this product

Answered by specialists

Which socket sizes does this flex-head wrench have?: The Bahco 4040M-21-23 combines two socket sizes in one tool: 21 mm on one end and 23 mm on the other.
How far can the wrench heads swivel?: Both heads swivel up to 180°, giving you optimal reach and leverage in confined spaces.
What is the benefit of the Dynamic-Drive profile?: The 12-point Dynamic-Drive profile applies torque to the fastener flanks rather than the corners, reducing wear and rounding.
What material is this spanner made from?: It is forged from high-performance alloy steel with a micro-matte chrome-plated finish for corrosion resistance.