BOEN BN21020MII 1/2-Inch Metric Deep Impact Socket Set, 10–24mm

The 1/2-inch-drive metric format pairs deep sockets with extension bars and adapters for automotive and industrial tasks. Sizes run from 10mm to 24mm, giving you a useful range in one organized set. Six commonly used larger sizes are made from CR-MO steel for high-torque applications, while the remaining sockets use heat-treated CR-V steel.

Pros

A spread of metric sizes helps when a repair calls for different fastener dimensions, and the deep profile provides extra reach around recessed nuts and bolts. The 19mm, 20mm, 21mm, 22mm, 23mm and 24mm sockets have yellow grooves for quick identification, stamped size markings on every socket make it easier to select the right one. Their CR-MO construction is specified with 1.5x greater torque resistance, while the other sizes are forged and heat-treated CR-V steel for general use.

The 6-point design engages fasteners at the sides, helping maintain contact under torque and reduce the chance of rounding. A black manganese phosphate coating provides corrosion and rust resistance. The included blow-moulded case keeps the pieces together for storage or transport between the garage and a vehicle repair.

Buyers highlight durability, functionality and value, describing the set as sturdy and useful in operation. These are user impressions rather than a substitute for choosing the correct socket and drive for the job.

Key features

The 21-piece set contains deep sockets in 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm and 24mm. It also includes 3-inch, 5-inch and 10-inch extension bars, a 1/2-inch universal joint, a 3/8-inch female-to-1/2-inch male adapter and a 1/4-inch female-to-1/2-inch male drill socket adapter. The set meets ANSI standards.

Compared with building a kit one socket at a time, this set brings a range of metric deep sockets and commonly useful drive accessories together in a labelled case. For a practical example, the extension bars can help reach fasteners set back from the working area during vehicle maintenance, while the universal joint offers an angled connection where a straight approach is awkward.

Usage tips

Match the socket size to the fastener and use the appropriate drive connection for your tool. Keep the sockets in their labelled case between jobs so the different sizes and accessories stay organized. A protective oil layer may be present on a new socket as part of its rust protection, take care when handling the set initially.

Before you decide

What socket sizes are included? The set covers metric sizes from 10mm through 24mm, with each listed size supplied as a deep socket.

What accessories come in the case? There are three extension bars, a 1/2-inch universal joint and two adapters: 3/8-inch female to 1/2-inch male, and 1/4-inch female to 1/2-inch male for a drill socket.

Which materials are used? The 19mm to 24mm sockets use CR-MO steel. The other socket sizes are made from heat-treated forged CR-V steel, and the set has a black manganese phosphate coating.

Should you buy it?

This BOEN set suits anyone equipping a garage or workshop for metric fasteners and wanting deep sockets, extensions and drive adapters in one portable case. Its mix of CR-MO steel for the larger sizes, CR-V steel for the rest, and clearly marked 6-point sockets makes it a practical fit for automotive and industrial work that calls for a 1/2-inch drive.