Getting your Trinity Audio player ready...

Milwaukee continues to expand its hand tool lineup with the introduction of its Bit Expansion Sets featuring FOUR FLAT sides, engineered to be part of the most versatile socket family on the market. These new bit socket sets are designed from the ground up to solve real jobsite frustrations, rolling sockets, poor access in tight spaces, and bit separation under load. With a slim profile, wrench-ready flats, and a durable one-piece construction, Milwaukee is raising the bar for professional-grade bit sockets across automotive, mechanical, electrical, and industrial applications.

At the core of every Milwaukee FOUR FLAT Bit Socket is a four parallel flat-side design that prevents rolling and allows for direct wrench use when a ratchet won’t fit. This geometry also creates a noticeably slimmer profile, giving users better access in confined spaces where standard round sockets struggle. Combined with laser-engraved size markings, chrome plating for corrosion resistance, and Milwaukee’s Lifetime Guarantee, these sockets are built for daily use in demanding environments.

Milwaukee’s Bit Expansion Sets cover a wide range of fastening needs, including Low-Profile TORX, Long Reach TORX, Tamper Proof TORX, Triple Square, Hex, and Ball End Hex configurations. Each set includes dedicated storage rails or trays to keep tools organized and accessible on the jobsite or in the shop.

Low-Profile TORX Bit Socket Sets:
Maximum Access in Tight Spaces

Milwaukee’s Low-Profile TORX Bit Socket Sets are designed for applications where clearance is limited and precision matters. The compact head height and FOUR FLAT sides allow users to reach fasteners in engine bays, machinery housings, electrical panels, and confined assemblies without sacrificing torque control.

The 11-piece 1/4″ Drive Low-Profile TORX Bit Socket Set (48-22-9533) includes sizes ranging from T8 through T50, all built with a one-piece socket design that eliminates the risk of the bit separating from the socket body. These sockets deter rolling, accept a wrench when needed, and store neatly on an included rail, making them ideal for technicians who value speed and organization.

Long Reach TORX Bit Socket Sets:
Deep Access Without Compromise

For fasteners recessed deep inside assemblies, Milwaukee offers Long Reach TORX Bit Socket Sets featuring a 6-inch shaft length and slim profile. The FOUR FLAT designs still apply, allowing for wrench-assisted turning while preventing roll-away on flat surfaces.

The 11-piece 1/4″ & 3/8″ Drive Long TORX Bit Socket Set (48-22-9534) spans sizes from T8 to T50, delivering extended reach without the flex or weakness often found in multi-piece designs. These sockets are ideal for automotive repair, industrial maintenance, and equipment service where fasteners sit below covers or inside housings.

Triple Square Bit Socket Sets:
Precision for Automotive & European Applications

Triple square fasteners are common in drivetrain, suspension, and engine components, especially in European vehicles. Milwaukee’s 12-piece 3/8″ Drive Triple Square Bit Socket Set (48-22-9536) delivers sizes from 4mm to 18mm, built to handle high-torque applications with confidence.

The FOUR FLAT sides provide stability on flat surfaces and allow for wrench compatibility when ratchet clearance is limited. With a chrome-plated finish, laser-etched markings, and Milwaukee’s Lifetime Guarantee, these sockets are designed for professional automotive technicians who need accuracy and durability every day.

Low-Profile Hex Bit Socket Sets:
SAE and Metric Options

Milwaukee expands its hex offering with Low-Profile Hex Bit Socket Sets available in both SAE and Metric. These sets deliver compact access for Allen-style fasteners without compromising strength.

12-piece 1/4″ Drive SAE Low-Profile Hex Set (48-22-9544)

10-piece 1/4″ Drive Metric Low-Profile Hex Set (48-22-9545)

Both sets feature FOUR FLAT sides, one-piece socket construction, rust-resistant chrome plating, and organized storage rails, making them ideal for electrical work, machinery assembly, and general maintenance.

Long Hex & Ball End Hex Bit Socket Sets: Reach and Angle When It Matters

For deep-set or obstructed fasteners, Milwaukee offers Long Hex Bit Socket Sets and Long Ball End Hex Bit Socket Sets in both SAE and Metric. These sockets feature 6-inch shafts and, in the case of ball end designs, allow up to 25° of angled entry, making them invaluable in tight or offset fastening situations.

Available sets include:

SAE & Metric Long Hex Bit Socket Sets (48-22-9546) (48-22-9547)

Metric & SAE Long Ball End Hex Bit Socket Sets (48-22-9548) (48-22-9549)

Each set maintains Milwaukee’s FOUR FLAT design, one-piece durability, and organized storage trays, delivering flexibility without sacrificing strength.

Why Milwaukee FOUR FLAT Bit Sockets Stand Out

Across every configuration, Milwaukee FOUR FLAT Bit Expansion Sets deliver a consistent set of professional advantages, starting with anti-roll FOUR FLAT sides that keep sockets from wandering on flat surfaces while also providing a wrench-ready design when a ratchet won’t fit. The slim profile improves access in tight spaces, and the one-piece socket construction increases durability by eliminating weak points found in multi-piece designs.

Laser-engraved size markings make identification quick and easy, while chrome plating helps protect against rust and corrosion in demanding environments. Each set includes dedicated storage rails or trays for better organization and is backed by a Milwaukee Lifetime Guarantee, ensuring these bit socket sets are built to perform reliably on real jobsites, not just on a spec sheet.

Milwaukee’s expanded FOUR FLAT Bit Socket lineup is available now at Ohio Power Tool, your trusted source for professional-grade tools, expert service, and fast shipping. Whether you’re upgrading your shop setup or filling gaps in your mobile tool kit, these Milwaukee Bit Expansion Sets deliver the versatility and durability tradespeople expect. Don’t hesitate to reach out at cs@ohiopowertool.com or 614-481-2111 with any questions, comments, or concerns, and be sure to follow us on all your favorite social media channels to stay in the know on all the latest announcements, deals, news, and more!