Draper Combined MM/AF Socket and Ratchet Set, 3/8" Sq. Dr. (22 Piece)

The Draper DD22AM/PR Combined MM/AF Socket and Ratchet Set is the practical choice for anyone who works across both metric and imperial-fastened equipment. With eleven metric and nine AF (imperial) sockets on a single rack, this 3/8" drive set eliminates the need to carry two separate kits when the job demands both measurement systems.

The metric range covers 10mm to 22mm — including the commonly needed 22mm size absent from many compact sets — providing solid coverage for everyday automotive, mechanical, and plumbing fasteners. The nine AF sockets span 1/4" to 7/8", addressing the imperial fastener sizes found on American and older British-manufactured vehicles, agricultural and plant machinery, classic cars, motorcycles, and imported equipment of all kinds. Together, the 20 sockets in this set cover the practical fastener range encountered across the vast majority of mixed-fleet workshop environments.

All sockets are manufactured from chrome vanadium steel, hardened and tempered for long-term durability, and finished with a satin chrome plating that protects against corrosion in demanding workshop and outdoor conditions. The 72-tooth reversible ratchet delivers a fine 5° swing arc, a quick-release socket button for fast changes, and a soft-grip handle for comfortable use over extended periods. The 100mm extension bar provides the additional reach needed for recessed or obstructed fasteners without sacrificing drive rigidity.

The full 22-piece set is supplied on a socket rack, keeping every socket and accessory clearly visible and immediately accessible without the bulk of a moulded carry case. The rack stores neatly in a tool chest drawer, on workshop shelving, or inside a tool bag.

Manufactured and tested in accordance with DIN3122 and ISO3315 specifications, the DD22AM/PR is built to a consistent professional standard and is particularly well suited to mechanics, agricultural engineers, classic vehicle restorers, and anyone regularly working on equipment from multiple manufacturing origins.

Key Features

• 22-piece combined metric and AF set — 11 metric and 9 imperial sockets on one rack
• 3/8" square drive — the most versatile drive size for everyday automotive and mechanical work
• 11 metric sockets — 10mm to 22mm including the often-omitted 22mm size
• 9 AF (imperial) sockets — 1/4" to 7/8" for American, classic British, and imported equipment
• Chrome vanadium steel — hardened, tempered, and satin chrome plated for strength and corrosion resistance
• 72-tooth reversible ratchet — 5° swing arc with quick-release button and soft-grip handle
• 100mm extension bar — for recessed and obstructed fastener access
• Socket rack storage — compact, case-free format keeps all 22 pieces visible and accessible
• DIN3122 & ISO3315 compliant — manufactured and tested to international professional standards
• Ideal for mixed-fleet workshops — covers metric and imperial fasteners in a single, portable set

What's in the Box

Supplied on a socket rack for storage and transportation.

What is an AF socket? AF stands for Across Flats, which is the imperial system of fastener measurement used predominantly in the United States and on older British-manufactured equipment. AF sizes are expressed in fractions of an inch and are not interchangeable with metric sockets, even when the physical difference is small. Using the correct AF socket prevents rounding of fastener heads and ensures a secure, accurate fit.

Who is this set designed for? The DD22AM/PR is particularly useful for mechanics and engineers who regularly work on equipment from multiple manufacturing origins — for example, a workshop servicing both European metric-fastened vehicles and American or classic British AF-fastened machinery. It is also well suited to agricultural and plant engineers, classic car and motorcycle restorers, and anyone working on imported tools, appliances, or equipment that uses imperial fixings alongside metric ones.

What metric sizes are included? The set covers 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 22mm. The inclusion of 22mm is worth noting — this size is absent from many compact socket sets but is commonly needed for larger automotive fasteners, particularly on suspension and drivetrain components.

What AF (imperial) sizes are included? The nine AF sockets cover 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", and 7/8" — spanning the most commonly encountered imperial fastener sizes in automotive, agricultural, and general mechanical applications.

How does this set differ from the metric-only DD12M/PR? The DD12M/PR is a 12-piece metric-only set covering 10–19mm, designed for straightforward metric fastener work. The DD22AM/PR extends that coverage in two directions — adding a 22mm metric socket and nine AF imperial sockets — making it the better choice wherever both fastener systems are regularly encountered. Both sets use the same 3/8" drive and socket rack storage format.

Is this set suitable for use on classic or American vehicles? Yes — the AF socket range of 1/4" to 7/8" covers the imperial fastener sizes most commonly found on American vehicles, classic British cars and motorcycles, and older agricultural machinery. Combined with the metric range, this set makes it practical to service mixed-standard vehicles without carrying separate toolkits.

What drive size does this set use? This set uses a 3/8" square drive, which is the most widely used drive size for general automotive and mechanical work. It offers a good balance between the fine control of 1/4" drive and the high-torque capacity of 1/2" drive, making it suitable for the broadest range of everyday fastening tasks.