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Announcement of the large impact wrench trade-in sale.
We are pleased to announce that our company will be holding the annual large impact wrench trade-in sale as detailed below. We kindly ask you to consider making a purchase during this period. 【Sale Details】 ■ Period: From August 21, 2025, to orders placed by December 31, 2025 ■ Models: 1) 1” SQ・N type large wrenches: KW-3800ISO-GL, KW-3800proXGL, KW-4500GL, KW-3800P, KW-4500P 2) 1” SQ・D type and other large wrenches: KW-385GL, KW-420GL, KW-380P, KW-40P ■ Sale Content: For orders of eligible model 1), we will provide a trade-in discount of 15,000 yen for the collection of the trade-in machine. For orders of eligible model 2), we will provide a trade-in discount of 10,000 yen for the collection of the trade-in machine. * As an additional benefit, we will also present one original Kuken cold-resistant jacket (included with the order) without fail. * The trade-in machine must be an air impact wrench, and the manufacturer does not matter.
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Notice of Comprehensive Catalog Revision
We have revised our comprehensive catalog at Kuken Co., Ltd. *For more details, please refer to the related materials or feel free to contact us.
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[Ended] Announcement of the campaign with Power Torque Setter benefits.
We are pleased to announce that our company will be conducting a campaign with benefits for the Power Torque Setter as detailed below. We encourage you to take advantage of this opportunity to make a purchase. Duration: From February 1, 2025, to March 31, 2025 (2 months) Name: Power Torque Setter Campaign with Benefits Eligible Models: PTS-800ESL-R, PTS-800E, PTS-800EX-L, PTS-1000E, PTS-600EX-L (5 models in total) Campaign Details: During the campaign period, for orders of the above eligible models, we will provide one of the following benefits: 1) Reaction Receiver for JIS (with socket), 2) Reaction Receiver for ISO (with socket), 3) Pitch Adjustable Reaction Receiver, 4) ISO Wheel Setter (set of 2), 5) Drain Separator (with coupler). However, for the PTS-1000E, only one of the following benefits will be available: 1), 2), 4), or 5). Additionally, optional specifications will also be included in the campaign during the campaign period. *For more details, please download the related materials or contact us.
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Notice of the end of the medium-sized air impact wrench trade-in sale.
We are pleased to announce that our company will be holding a trade-in sale for medium-sized (3/4"SQ) air impact wrenches. We invite you to take advantage of this opportunity to make a purchase. 【Sale Details】 ■ Period: From January 21, 2025, to orders placed by March 31, 2025 ■ Models: Medium-sized (3/4"SQ) air impact wrenches, a total of 10 models: KW-20P, KW-20PI, KW-20GI-6, KW-230P, KW-2000P, KW-2000proI, KW-2500pro, KW-2800PA, KW-L17G, KW-L17GV (Note: Impact wrenches with different anvil types from the above models are also eligible.) ■ Sale Details: For each eligible model ordered, we will provide a trade-in discount of 5,000 yen for the collection of the trade-in machine. ■ Additional Benefit: We will include a KUKEN original logo knit cap as a gift (included in the package). ■ The trade-in machine must be an air impact wrench of 3/4"SQ or larger, and the manufacturer does not matter.
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Notice of the end of the medium-sized air impact wrench trade-in sale.
We are pleased to announce that our company will be holding a trade-in sale for medium-sized (3/4"SQ) air impact wrenches. We encourage you to take advantage of this opportunity to make a purchase. 【Sale Details】 ■ Period: From January 21, 2025, to orders placed by March 31, 2025 ■ Models: Medium-sized (3/4"SQ) air impact wrenches, a total of 10 models KW-20P, KW-20PI, KW-20GI-6, KW-230P, KW-2000P, KW-2000proI, KW-2500pro, KW-2800PA, KW-L17G, KW-L17GV (Note: Impact wrenches with different anvil types from the above models are also eligible.) ■ Sale Details: For each eligible model ordered, we will provide a trade-in discount of 5,000 yen for the collection of the trade-in machine. ■ Additional Benefit: We will include a KUKEN original logo knit cap as a gift (included in the package). ■ The trade-in machine must be an air impact wrench of 3/4"SQ or larger, and the manufacturer does not matter.

About空研
本社
Let's create a fun workplace that balances a sense of purpose and economics.
Since our establishment, we have been committed to technological innovation in tightening control systems and grinding and polishing work systems focused on automotive sheet metal painting operations. We are enhancing the know-how we have cultivated over many years in the automotive sector and construction machinery manufacturers regarding the development, manufacturing, sales, and service of air tools, striving to improve customer satisfaction with a view not only to the domestic market but also to customers around the world. Additionally, we are actively addressing the recent issue of global warming and are engaged in energy conservation and resource recycling as part of our business activities.