Britool England MDBSET9 3/8" Deep AF 12 Point Socket Set 9pc UK Made

The Britool England MDBSET9 9-Piece 3/8" Drive Deep AF Socket Set is a genuine UK-manufactured Britool socket set featuring nine imperial AF sizes from 1/4" through to 3/4".

Manufactured from high-quality Chrome Vanadium steel, each socket features a 12-point / bi-hexagon profile combined with a deep-reach design, making the set particularly useful for working with recessed AF fasteners and nuts positioned on longer threaded studs.

These sockets were manufactured at the original Britool UK production facility before it closed, making examples from this range increasingly difficult to source. This makes the MDBSET9 particularly appealing to professional mechanics, engineers, classic vehicle specialists and Britool enthusiasts looking for genuine older British-made tooling.

Individual replacement sockets from the MDB range are also available separately as and when required.

Key Features

• Genuine Britool England MDBSET9
• Original UK-made Britool socket set
• 9-piece imperial / AF socket selection
• 3/8" square drive
• Deep / long-reach socket profile
• 12-point / bi-hexagon design
• Manufactured from high-quality Chrome Vanadium steel
• Sizes from 1/4" to 3/4" AF
• Ball retaining groove in each face of the square drive
• Positive connection with compatible 3/8" drive accessories
• Ideal for classic automotive and engineering applications
• Suitable for professional workshop hand-tool use
• Increasingly rare original Britool UK production
• Individual MDB sockets available separately

Set Contents

The MDBSET9 contains nine deep AF sockets:

1/4", 5/16", 3/8", 7/16", 1/2", 19/32", 5/8", 11/16" and 3/4"

Quantity: 9 Sockets
Drive: 3/8" Square Drive
Measurement: AF / Imperial
Profile: 12-Point / Bi-Hexagon
Depth: Deep
Material: Chrome Vanadium Steel
Part Reference: MDBSET9
Manufacture: England

Deep Socket Design

The deep socket profile provides additional reach compared with a conventional standard-depth socket.

This makes the MDB range useful when working with:

• Recessed AF fasteners
• Nuts positioned on longer studs
• Classic vehicle components
• Engine assemblies
• Mechanical equipment
• Machinery
• Difficult-to-access imperial fasteners

For workshops maintaining older vehicles and machinery, a dedicated set of deep AF sockets can provide useful coverage alongside modern metric tooling.

12-Point Bi-Hexagon Profile

Each socket features a 12-point / bi-hexagon profile, providing additional engagement positions around compatible AF fasteners.

The multiple positioning points can make socket alignment easier in restricted areas where there is limited space available to reposition a ratchet or other hand tool.

The sockets should always be correctly matched to the AF fastener size before torque is applied.

Ball Retaining Grooves

Each socket incorporates a ball retaining groove in each face of the square drive, helping provide a secure and positive connection with compatible 3/8" square drive ratchets, extension bars and accessories.

This traditional Britool design provides reliable socket retention during professional hand-tool applications.

Chrome Vanadium Steel

The MDB sockets are manufactured from high-quality Chrome Vanadium steel, providing the strength and durability required for professional hand-tool applications.

These are traditional chrome hand sockets designed for use with appropriate manual 3/8" square drive tools.

They are not impact sockets and should not be used with pneumatic or powered impact tools.

Original Britool England Manufacture

A particularly important feature of the MDBSET9 is its British manufacturing heritage.

These sockets were produced at the original Britool manufacturing facility in the United Kingdom before the plant closed.

As remaining stocks of these original UK-made sockets are finite, they have become increasingly difficult to source.

The set can therefore be particularly relevant for:

• Professional mechanics maintaining older vehicles
• Classic and vintage vehicle workshops
• British car restoration
• Motorcycle restoration
• Agricultural machinery maintenance
• Mechanical engineering
• Existing Britool England tool users
• Britool collectors
• Workshops replacing missing MDB sockets

AF / Imperial Applications

Unlike a modern metric socket set, the MDBSET9 provides a dedicated selection of AF / imperial socket sizes.

AF fasteners remain relevant when servicing and restoring many older vehicles, machines and mechanical assemblies.

The range can be particularly useful for technicians working with:

• Classic British cars
• Classic motorcycles
• Vintage vehicles
• Older machinery
• Agricultural equipment
• Engineering equipment
• Imperial fasteners
• Restoration projects

Always identify the actual fastener standard and size before selecting a socket.

Individual MDB Sockets Available

Individual Britool MDB deep AF sockets are available separately as and when required.

This allows an existing set to be expanded or a missing individual socket to be replaced without purchasing another complete MDBSET9.

For owners of older Britool England socket collections, individual availability can also help maintain an original matching set.

The Britool Hallmark Range

The Britool Hallmark range was developed by Britool in the 1980s for the automotive aftermarket and has been a long-established choice for professional workshop users.

Each tool carries distinctive Britool Hallmark branding, ,  providing clear identification and reflecting the professional tooling heritage of the range.

The Britool Hallmark guarantee covers defects in materials and/or workmanship when tools are used for the purpose for which they were designed.

The guarantee does not extend to fair wear and tear or moving parts such as ratchet mechanisms.

Important Information

• Genuine Britool England MDBSET9.
• Original UK-manufactured Britool tooling.
• 9-piece deep AF socket set.
• 3/8" square drive.
• 12-point / bi-hexagon profile.
• Chrome Vanadium steel construction.
• Sizes: 1/4", 5/16", 3/8", 7/16", 1/2", 19/32", 5/8", 11/16" and 3/4".
• Individual MDB sockets are available separately.
• Designed for appropriate manual hand tools.
• These are not impact sockets and should not be used with pneumatic or powered impact tools.
• Original UK-made stock is increasingly rare and availability may therefore be limited.
  
• As these are older UK-manufactured sockets produced across differing manufacturing styles, there may be some variation in appearance between sockets supplied in the set. This does not alter the stated sizes or intended hand-tool application and is reflected in the reduced price.