The Ko-ken 6 Piece Reducer & Adaptor Set (KOPK2346/6) is a professional-grade socket conversion kit designed to connect and adapt different drive sizes across your tool system.

Manufactured in Japan, this high-precision adaptor set allows seamless conversion between 1/4″, 3/8″, 1/2″, and 3/4″ drive tools, making it an essential addition for mechanics, technicians, and industrial trades.

Ideal for workshops where multiple drive systems are used and flexibility is required without changing full socket sets.

Why Use a Socket Adaptor Set?

In real workshop environments, tools often don’t match the socket size required for the job.

This adaptor set solves that problem by allowing you to:

• use existing sockets across different drive tools
• reduce the need for duplicate socket sets
• increase flexibility in confined or mixed-tool environments
• quickly adapt between light-duty and heavy-duty applications

Key Features

• 6-piece complete drive conversion set
• Converts between 1/4″, 3/8″, 1/2″, and 3/4″ drive systems
• High-strength Ko-ken Japanese engineering
• Precision-machined for tight fit and reduced play
• Supplied in organised storage tray
• Suitable for hand tool use in professional environments
• Designed for durability under workshop torque loads

Included Sizes (Typical Configuration)

This set generally includes adapters for:

• 1/4″ to 3/8″ drive conversion
• 3/8″ to 1/4″ drive conversion
• 3/8″ to 1/2″ drive conversion
• 1/2″ to 3/8″ drive conversion
• 1/2″ to 3/4″ drive conversion
• 3/4″ to 1/2″ drive conversion

Applications

This adaptor set is widely used in:

• Automotive workshops
• Heavy vehicle maintenance
• Industrial fitting and assembly
• Mining and field service work
• Mechanical repair and servicing
• General trade toolkits requiring multi-drive compatibility

Important Usage Note (Torque Safety)

When using reducer/adaptor systems:

• always match torque application to the weakest component
• avoid using small drives with high-torque breaker bars
• ensure correct seating to prevent rounding or failure

???? Adapters are designed for flexibility, not torque multiplication.

Build Quality & Performance

Ko-ken is known for extremely tight machining tolerances, resulting in:

• reduced wobble between connections
• smooth drive transitions
• long service life under repeated use
• professional-level fit compared to generic adaptors

This makes it suitable for technicians who rely on accuracy and reliability in daily use.

Product Specifications

• Product code: KOPK2346/6
• Brand: Ko-ken
• Type: Reducer / Socket Adaptor Set
• Pieces: 6
• Drive sizes: 1/4″, 3/8″, 1/2″, 3/4″
• Material: High-strength alloy steel
• Application: Professional hand tool use
• Origin: Japan

Who This Set Is For

Perfect for:

• mechanics and automotive technicians
• heavy industry maintenance crews
• workshop professionals using mixed drive systems
• electricians and fitters needing socket flexibility
• toolkits requiring compact multi-drive conversion capability