What is the size of this combination spanner?

This spanner has a width across flats of 21 mm on both the ring and open end.

What is the total length of the Gedore 1 B 21?

The total length of this combination spanner is 280 mm.

What is the benefit of the UD profile on the ring end?

The UD profile ensures gentle, uniform torque transmission to protect fastener edges.

Is the ring end angled?

Yes, the ring end is offset at a 10° angle from the shaft for improved access.

Is this combination spanner spark-resistant?

No, this tool is not spark-resistant.

GEDORE 1 B 21 ring spanner UD profile 21 mm - 6002020

Name: GEDORE 1 B 21 ring spanner UD profile 21 mm - 6002020
Brand: GEDORE
SKU: 41890018
Price: 19.4 EUR
Availability: InStock

Supplier number: GEDORE 6002020 | EAN 4010886600207

Recommended Retail Price €33.13

19.40 tax incl.

€16.03 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered as of 05/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

Reliable fastening with Gedore precision

Practical benefits

Protects fasteners from damage: The UD-profile distributes torque evenly across bolt heads to prevent rounding during heavy fastening tasks.
Offset ring for clearance: The 10° angled ring end gives you essential knuckle clearance when working over flat surfaces.
High strength and durability: Crafted from robust vanadium steel, it delivers maximum bending resistance under rigorous professional use.

In a nutshell

The right choise for

Tackle demanding fastening tasks with confidence using the Gedore 1 b 21 combination spanner. Designed for 21 mm fasteners, the ring end features the specialized ud profile, which distributes torque evenly to protect bolt heads and nuts from rounding off. Thanks to its 280 mm length, you gain ample leverage to loosen stubborn fasteners smoothly in mechanical and maintenance work. The 10° offset ring end provides essential clearance for your hands when working flat against surfaces or navigating around obstacles. Forged from high-grade chrome-plated vanadium steel, this durable spanner offers exceptional bending resistance for dependable daily performance in the workshop.

Product information FAQ

€19.40

In stock - tax incl.

Key features according to our expert

Width across flats: 21 mm
Non-sparking: No
Length: 280 mm

Product description

Construction in accordance with DIN 3113 form B
ISO 3318
ISO 7738
Size 5 and 5.5 mm with hexagonal ring, from 6 mm with UD profile
Chrome vanadium steel 31CrV3, chrome-plated
Carefully forged and expertly machined
Ring bent and angled at 10°, with UD profile for careful force transmission
Overload is indicated by deformation
Deep-set or countersunk nuts or screws can be safely operated even with the curved washer
High industrial quality for continuous use under severe conditions, * not standardised

All Features

Width across flats: 21 mm
Non-sparking: No
Length: 280 mm
Head height 2 [mm]: 8.7 mm
Surface area: chromed
Head height 1 [mm]: 14.5 mm
Standard: DIN 3113 - form BISO 3318 ISO 7738
Head width 1 [mm].: 30.5 mm
Key width 1 [mm]: 21
Crown heights 1: 26 mm
Head width 2 [mm]: 45.8 mm
Weight lbs]: 0.620 lbs
Ring offset: 10°
Bekstand 1: 15°
Material: Vanadium steel 31CrV3
Overall length [mm]: 280 mm

Brand GEDORE
41890018
EAN 4010886600207
Supplier number GEDORE 6002020

Frequently asked questions about this product

Answered by specialists

What is the size of this combination spanner?: This spanner has a width across flats of 21 mm on both the ring and open end.
What is the total length of the Gedore 1 B 21?: The total length of this combination spanner is 280 mm.
What is the benefit of the UD profile on the ring end?: The UD profile ensures gentle, uniform torque transmission to protect fastener edges.
Is the ring end angled?: Yes, the ring end is offset at a 10° angle from the shaft for improved access.
Is this combination spanner spark-resistant?: No, this tool is not spark-resistant.