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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″ Impact Wrench Adaptor

Item no.: 18888AL

Ko-ken’s adaptor is a high-quality 1″ impact wrench adaptor—designed to connect sockets or inserts securely and quickly to a 1″…

€ 193,20

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1" Impact Wrench Adaptor

1″ Impact Universal Joints

Item no.: 18771

The 1″ input drive universal joint from Ko-ken reliably transfers torque even with offset or hard-to-reach screw connections — ideal…

€ 148,95

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1" Impact Universal Joints

Impact Wrench Adaptor 1″ to 1.1/2″

Item no.: 18877A

The Ko-ken adaptor converts a 1″ female square opening input drive to 1.½″ square male — ideal when using larger…

€ 101,95

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Impact Wrench Adaptor 1'' to 1.1/2''

1″ Impact Extension Bar

Item no.: 18760

The Ko-ken extension is a high-quality 1″ square drive extension for impact wrenches or large ratchets—ideal when you need more…

from € 79,35

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1" Impact Extension Bar

1″ Impact Universal Joint

Item no.: 18770

The 1″ Input drive Universal Joint from Ko-ken reliably transmits torque even for offset or hard-to-reach screw connections — ideal…

€ 148,95

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1'' Impact Universal Joint

2.1/2″ 6-point Impact Socket (long)

Item no.: 19300M

The Ko-ken socket is a long 6-point Impact Socket with a 2.1/2″ square drive — designed for particularly large nuts…

from € 1.644,20

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2.1/2" 6-point Impact Socket (long)

Impact Wrench Adaptor 1″ to 3/4″

Item no.: 18866A

The Ko-ken Adaptor converts a 1″ square Input drive to a 3/4″ square drive — ideal for operating smaller Sockets…

€ 53,65

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Impact Wrench Adaptor 1" to 3/4", 200 mm

2.1/2″ 6-point Impact Socket (inch)

Item no.: 19400A

The Ko-ken socket is a heavy-duty 6-point impact socket with 2.½” square drive — designed for the most demanding bolt…

from € 932,45

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2.1/2" 6-point Impact Socket

2-1/2″ 6-point Impact Socket

Item no.: 19400M

The Socket by Ko-ken is a long 6-point Impact Socket with a 2-1/2″ square Input drive—developed for particularly large bolts…

from € 859,75

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2.1/2" 6-point Impact Socket

2.1/2″ Impact Extension Bar

Item no.: 19760

The extension bar from Ko‑ken is a powerful 1″ square drive extension — ideal for gaining more reach when used…

from € 2.322,30

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2.1/2'' Impact Extension Bar

2.1/2″ Impact Universal Joints

Item no.: 19770

The Ko-ken Universal Socket is designed for impact wrenches to safely and reliably transmit torque even at unfavorable angles or…

€ 3.230,85

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2.1/2'' Impact Universal Joints

Adaptor 2.1/2″ to 1.1/2″

Item no.: 19977A

The Ko‑ken adaptor converts a 2.½″ square input drive to a 1.½″ square drive — ideal for combining large impact…

€ 1.901,30

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Adaptor 2.1/2'' to 1.1/2''

3/4″ 6-point Impact Socket (inch) thin-wall, 100 mm

Item no.: 16301A

The Ko-ken socket is a high-quality thin-wall impact socket with 3/4″ square drive – specially designed for professional use with…

from € 46,45

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3/4" 6-point Impact Socket (inch) thin-wall, 100 mm

3/4″ 6-point thin-walled Impact Socket, 100 mm

Item no.: 16301M

The Ko-ken Impact Socket is a high-quality thin-walled Impact Socket with a 3/4″ square drive – specifically designed for professional…

from € 43,10

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3/4" 6-point Impact Socket (inch) thin-wall, 100 mm

Stud Bolt Puller (Inch)

Item no.: 162E(inch)

This Stud Bolt Puller is suitable for screwing in and removing stud bolts.

from € 24,35

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Stud Bolt Driver (Inch)

12-Point Double-Ended Scaffolding Ratchet Wrench, Long Version

Item no.: 171

The double-ended 12-point scaffolding ratchet wrench from Ko-ken is designed for professional use in scaffolding construction. Robust construction and double-ended…

€ 98,25

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12-Point Double-Ended Scaffolding Ratchet Wrench, Long Version

12-point Double-Sided Scaffolding Ratchet

Item no.: 170S

The double-sided 12-point scaffolding ratchet from Ko-ken is designed for professional scaffolding use. Robust construction and dual-sided functionality enable safe…

€ 83,25

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12-point Double-Sided Scaffolding Ratchet

Stud Bolt Driver

Item no.: 162E
162E (mm) D (mm) L (mm) Weight (g)
8 23 66 82 g
10 27.9 66 107 g

from € 24,35

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Stud Bolt Driver (Inch)

1/2″ scaffolding ratchet with locking button, long version

Item no.: 171B-1/2

Scaffolding ratchet with locking button for safe work on screw connections on construction sites. The locking button allows for a…

€ 112,85

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1/2'' scaffolding ratchet with locking button, long version

12-point double-ended scaffolding ratchet wrench

Item no.: 171S

The double-ended 12-point scaffolding ratchet wrench from Ko-ken is designed for professional use in scaffolding. Its robust design and double-sided…

€ 85,05

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12-point double-ended scaffolding ratchet

12-point double-sided scaffolding ratchet, long version

Item no.: 172

The double-sided 12-point scaffolding ratchet from Ko-ken is designed for professional use in scaffolding. Its robust construction and double-sided functionality…

€ 153,75

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12-point double-sided scaffolding ratchet, long version

Drill chuck adapter

Item no.: 184E.64
184E-64 D (mm) H1(mm) H2(mm) L(mm) Weight(g)
3/8 x 24UNF 12.5 14.5 13 64 34 g
1/2 x 20UNF 12.5…

€ 18,00

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Drill chuck adapter - sketch

Impact Wrench Stud Bolt Puller

Item no.: BD004

This Stud Bolt Puller is suitable for installing and removing stud bolts with an impact wrench.

from € 61,15

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Impact Wrench Stud Bolt Puller

1/2″ scaffolding ratchet with locking button, short version

Item no.: 171SB-1/2

Scaffolding ratchet with locking button for safe work on bolted connections on construction sites. The locking button enables quick socket…

€ 95,10

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1/2" scaffolding ratchet with locking button, short version

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Input drive

Input drive
  • 3/8" (4)
  • 1/4" (2)

Input drive profile

Input drive profile
  • Internal Square (4)
  • External Square (1)

Output size

Output size
  • 3/8" (3)
  • 1/4" (1)

Output profile

Output profile
  • External Square (4)