The 21PC 1/4″ & 3/8″ Drive Socket Set 12PT Metric Chrome is a compact yet versatile socket wrench set designed for automotive repair, machinery maintenance, and general mechanical work. Combining 1/4″ and 3/8″ drive systems, this professional kit provides a practical selection of 12-point (bi-hex) metric sockets, extension bars, ratchets, and essential accessories for everyday fastening tasks.

Manufactured from premium chrome vanadium steel, every socket is precision-machined for an accurate fit and dependable torque transmission. The 12-point socket design allows easier alignment with fasteners and offers more engagement positions than standard 6-point sockets, making work faster in confined areas.

The set includes 1/4″ drive sockets from 4MM to 9MM and 3/8″ drive sockets from 10MM to 19MM, covering the most commonly used metric fastener sizes. Extension bars, ratchets, and drive accessories increase flexibility and improve access to recessed or difficult-to-reach fasteners.

Finished with a corrosion-resistant polished chrome coating and supplied in a durable storage case, the 21PC Socket Set is an excellent choice for professional technicians, maintenance engineers, and DIY users.

Features

• Professional 21-piece socket wrench set.
• Includes 1/4″ and 3/8″ drive systems.
• 12-point (bi-hex) metric sockets.
• Chrome vanadium steel construction for strength and durability.
• Fully polished chrome finish for corrosion resistance.
• Precision-machined sockets for secure fastener engagement.
• Includes extension bars for improved reach.
• Compact and portable storage case.
• Suitable for automotive, industrial, and home workshop use.
• Ideal for maintenance, repairs, and equipment servicing.

Usage

The 21PC Socket Set is ideal for:

• Automotive servicing and repairs.
• Motorcycle maintenance.
• Engine and transmission work.
• Machinery maintenance.
• Equipment assembly.
• Industrial repairs.
• Mechanical workshops.
• Home garage projects.
• General fastening applications.
• DIY mechanical maintenance.

Specifications

Included Components

1/4″ Drive 12PT Metric Sockets (2335M)

• 4MM
• 5MM
• 5.5MM
• 6MM
• 7MM
• 8MM
• 9MM

Extension Bars (3221)

• 3″ Extension Bar
• 6″ Extension Bar

3/8″ Drive 12PT Metric Sockets (3330M)

• 10MM
• 11MM
• 12MM
• 13MM
• 14MM
• 17MM
• 19MM

Drive Accessories

• 2179DF – Universal Joint
• 363021 – 1/4″ Drive Reversible Ratchet Handle
• 363516 – 3/8″ Drive Reversible Ratchet Handle
• 3769-08F – Sliding T-Handle
• 3812 – Spark Plug Socket / Drive Accessory

Package Includes

• 7 × 1/4″ Drive 12PT Metric Sockets (4MM–9MM)
• 7 × 3/8″ Drive 12PT Metric Sockets (10MM–19MM)
• 2 × Extension Bars (3″ & 6″)
• 1 × Universal Joint
• 1 × 1/4″ Drive Reversible Ratchet Handle
• 1 × 3/8″ Drive Reversible Ratchet Handle
• 1 × Sliding T-Handle
• 1 × Drive Accessory / Spark Plug Socket
• 1 × Blow-Molded Storage Case