What is included in this 4-piece adaptor set?

The set includes four adaptors: for 1/4", 3/8", and 1/2" square drive sockets, plus one adaptor for 1/4" screwdriver bits, all in a compact plastic box.

How do these adaptors work with a ratcheting wrench?

You insert the adaptor into the ring end of a matching ratcheting spanner. This turns your spanner into a low-profile ratchet for sockets or hex bits.

How are the sockets and bits secured in place?

The 1/4", 3/8", and 1/2" socket adaptors have a quick-release press button, while the 1/4" bit adaptor features a retaining ring for secure bit retention.

What is the main benefit compared to a standard socket ratchet?

Paired with a flat ratcheting spanner, they provide a very low working profile, making it easier to reach fasteners in tight, confined spaces.

What material are these adaptors made from?

They are manufactured from high-performance alloy steel with a high-polished finish, complying with DIN 3120 and ISO 1174 standards.

BAHCO 1RMA/S4 adapter set for ratchet spanners in box 4-piece

Name: BAHCO 1RMA/S4 adapter set for ratchet spanners in box 4-piece
Brand: BAHCO
SKU: 02227705
Price: 42.8 EUR
Availability: PreOrder

Supplier number: BAHCO 1RMA/S4 | EAN 7314153014658

Recommended Retail Price €81.25

42.80 tax incl.

€35.37 excl. VAT (incl. all environmental contributions)

On order: delivered from 08/10/2026

set

Ordered before 20:00 - delivered as of 08/10/2026
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.

✆ Talk to a specialist

Versatile flexibility for ratcheting wrenches

Practical benefits

Versatile Bahco adaptor set: This 4-piece set quickly converts standard ratcheting ring wrenches into practical socket and bit drives.
Fast quick-release button: You change sockets effortlessly and securely using the integrated quick-release push button.
Durable and compact storage: Made from high-performance alloy steel and supplied in a pocket-sized storage box.

In a nutshell

The right choise for

With the Bahco 1RMA/S4 adaptor set, you instantly expand the versatility of your ratcheting ring spanners. This 4-piece set converts your spanner into a low-profile ratchet for sockets and screwdriver bits, making it the ideal solution for tight engine bays and confined machinery where standard ratchet heads cannot fit. The set contains adaptors for 1/4", 3/8", and 1/2" square drive sockets along with a 1/4" bit adaptor. The integrated quick-release push button allows for rapid and secure socket changes, while the bit adaptor features a dependable retaining ring. Crafted from high-performance alloy steel, the adaptors stay organized in a compact plastic storage box.

Product information FAQ

€42.80

tax incl.

Key features according to our expert

Product description:

Ratcheting wrench adaptors set, 4 pcs
High performance alloy steel
High polished finish
Adaptors for 1/4", 3/8" and 1/2" sockets with quick release press button
Adaptor for 1/4" bits with retaining ring
Supplied with a compact plastic pocket box
ISO 1174, DIN 3120
Adaptors are available for replacement

All Features

Standard: ISO 1174 / DIN 3120
Package: 84 x 100 x 35 mm
Length package mm: 35 mm
Width package mm: 100 mm
Weight oz oz: 1,6 oz
Height package mm: 84 mm
Weight g: 45 g

Brand BAHCO
02227705
EAN 7314153014658
Supplier number BAHCO 1RMA/S4
Warranty Lifetime warranty on Bahco? Or limited in time? Read more about it here.

Frequently asked questions about this product

Answered by specialists

What is included in this 4-piece adaptor set?: The set includes four adaptors: for 1/4", 3/8", and 1/2" square drive sockets, plus one adaptor for 1/4" screwdriver bits, all in a compact plastic box.
How do these adaptors work with a ratcheting wrench?: You insert the adaptor into the ring end of a matching ratcheting spanner. This turns your spanner into a low-profile ratchet for sockets or hex bits.
How are the sockets and bits secured in place?: The 1/4", 3/8", and 1/2" socket adaptors have a quick-release press button, while the 1/4" bit adaptor features a retaining ring for secure bit retention.
What is the main benefit compared to a standard socket ratchet?: Paired with a flat ratcheting spanner, they provide a very low working profile, making it easier to reach fasteners in tight, confined spaces.
What material are these adaptors made from?: They are manufactured from high-performance alloy steel with a high-polished finish, complying with DIN 3120 and ISO 1174 standards.