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Ko-ken Tool Co., Ltd.

Ko-ken has stood for high-quality hand tools „Made in Japan“ for decades. The brand is known worldwide for precise manufacturing, durable materials and outstanding workmanship. In sockets and impact tools in particular, Ko-ken is the benchmark for professional use in industry, workshops and mobility.

Discover the tools from Ko-ken – built for everyone who relies on absolute reliability and precision.

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1/2″ Double Square Socket

Item no.: 4109M

The Ko-ken socket features a double square output size, enabling secure power transmission. Ideal for professional use on specialized screw…

from € 10,70

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1/2" Double Square Socket

1/2″ Adapter for Oil Service Socket (106)

Item no.: 4102

The Ko-Ken adapter for oil service sockets (Art. No. 106), when combined with suitable sockets, enables safe and efficient handling…

€ 8,55

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1/2'' Adapter for Oil Service Sockets (106)

1/2″ Bit set for alternator service, 4-piece

Item no.: 4282

The 4-piece Ko-ken Bit set was developed specifically for alternator service. It enables precise installation and removal of the generator…

€ 75,75

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1/2'' bit set for alternator service, 4-piece

1/2″ socket for the injection column retaining nut, 72 mm

Item no.: 4122-72 22mm

This special socket is specifically designed for the injection column retaining nut on M.B. and trucks.

€ 27,60

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1/2'' socket for the injection column retaining nut

1/2″ female square opening Bit Socket for oil service, 24 mm

Item no.: 4111M-24

Bit for oil service, ideal for secure use. Also available as a complete set (Item no. 4202).

€ 12,35

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1/2" Square Male Bit Socket for oil service

1/2″ Oil Drain Plug Set

Item no.: 4202

The oil service set enables fast and precise loosening and tightening of oil filters. It consists of a 1/2″ holder…

€ 72,75

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1/2″ Oil Drain Plug Set

1/2″ Spark Plug Socket

Item no.: 4300C

The Ko-ken spark plug socket is a precision 6-point socket with a retaining spring that ensures a secure fit and…

from € 23,40

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3/8" Spark Plug Socket with Retaining Spring

1/2″ Socket for Diesel Injectors

Item no.: 4133

This specialized socket was specifically designed for injectors on M.B. and trucks.

€ 24,50

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1/2" Socket for Diesel Injectors

1/2″ Square Male bit socket for oil service

Item no.: 4110M

Bit for oil service, ideal for secure handling. Also available as a complete set (Art. No. 4202).

from € 12,05

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1/2" Square Male bit socket for oil service

1/2″ spark plug socket with universal joint and retaining spring

Item no.: 4340C

The universal-joint spark plug socket with 6-point profile and retaining spring offers maximum flexibility and a secure hold when changing…

from € 55,85

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1/2" spark plug socket with universal joint and retaining spring

1/2″ TORX Socket (set)

Item no.: 4425-N

The TORX socket features a TORX profile, ensuring optimal power transmission and a secure grip.

from € 10,60

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1/2" TORX® Socket

1/2″ Socket for Oil Pressure Switches

Item no.: 4300H

The Ko-ken socket is a specialized tool for the easy and precise installation or removal of oil pressure switches.

from € 27,20

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1/2'' Socket for Oil Pressure Switches

1/2″ 6-point socket for wheel nuts, 110 mm

Item no.: 4300M-110

The 1/2″ socket in extra-long design is perfect for safely loosening and tightening wheel nuts, especially for deep-seated fasteners.

from € 38,00

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1/2" 6-point socket for wheel nuts (extra long)

1/2″ Socket for Oil Pressure Switches, 27 mm

Item no.: 4300H-27(8P)

The Ko-ken socket is a specialized tool for the easy and precise installation or removal of oil pressure switches.

€ 34,65

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1/2" Socket for Oil Pressure Switches

1/2″ Spark Plug Socket with Rubber Insert

Item no.: 4300S

The spark plug socket with rubber insert ensures a firm grip on the spark plug while protecting it from damage.

from € 16,10

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1/2" Spark Plug Socket with Rubber Insert

1/2″ aluminium-alloy socket for aluminium wheel nuts

Item no.: AN14300M

The 1/2” socket made of aluminium-alloy material is specially designed for aluminium wheel nuts. It ensures a secure grip and…

€ 32,90

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1/2'' aluminium-alloy socket for aluminium wheel nuts

3/4″ Socket for wheel mounting (extra long)

Item no.: 6102M-400 41Wx21W

The extra-long 3/4” socket makes loosening and tightening wheel nuts easier, even with deep-seated or narrow wheel bolts.

€ 170,60

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3/4'' Wheel Mounting Socket (extra long)

3/4″ Wheel Mounting Socket, 400 mm

Item no.: 6102M-400

The extra-long 3/4” socket makes loosening and tightening lug nuts easier, even with deep-seated or narrow wheel bolts.

€ 157,85

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3/4'' Wheel Mounting Socket (extra long)

3/4″ Slotted Bit Socket(sets)

Item no.: 6101

Slotted Bit for ratchets, ideal for precise loosening and tightening of slotted screws. Robust design for a secure grip and…

€ 46,45

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3/4'' Slotted Bit Socket

1/2″ TORX Socket set, 6-piece set on holding rail

Item no.: RS4425/6-N

The TORX Socket set includes various sizes and features precision TORX profiles for optimal power transmission and a secure fit.…

€ 61,35

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1/2" TORX socket set, 6-piece set on holding rail

1/2″ Impact Socket Set for wheel mounting (thin-walled), 5-piece set in plastic case

Item no.: P14145M/5

This wheel nut impact socket set was specifically developed for mounting wheel nuts.
Thanks to the 110 mm length, even…

€ 173,35

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1/2″ Impact Sockets for wheel mounting (thin-walled), 5-piece set in plastic case

T-Handle for wheel installation

Item no.: 4711X

The Ko-ken T-Handle for wheel installation has been specially designed to make tightening and loosening wheel nuts effortless and safe.…

€ 84,65

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T-Handle for wheel installation

3/4″ Impact Socket for Rear Wheel Nuts (Colored)

Item no.: PW6P

The 3/4” Impact Socket is ideal for the quick and safe loosening and tightening of rear wheel nuts. The color…

from € 69,15

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3/4" impact sockets for rear wheel nuts (colored)

1″ Impact Socket for Rear Wheel Nuts

Item no.: PW8

The 1” Impact Socket is ideal for quickly and securely loosening and tightening rear wheel nuts.

from € 56,85

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1'' Impact Socket for Rear Wheel Nuts

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Units

Units
  • Metric (3)
  • Inch (1)

Input drive

Input drive
  • 7/16" (15)

Input drive profile

Input drive profile
  • External Hex (15)

Output size

Output size
  • 10mm (3)
  • 12mm (3)
  • 4mm (3)

Output profile

Output profile
  • External Hex (4)
  • External Spline (XZN) (3)
  • External TORX® (T) (3)