#Japan #Black Hole #Fukuyama #Castem #Kinnikuman

Unique Pen Holders Inspired by Kinnikuman

In an exciting blend of pop culture and functional design, Castem Co., Ltd., a precision casting manufacturer based in Fukuyama City, Hiroshima, has unveiled two captivating pen holders inspired by characters from the beloved manga "Kinnikuman." The pen holders feature intricately crafted designs of the protagonist Kinnikuman and his nemesis, the evil Black Hole, showcasing the company’s unique precision casting technology.

Availability and Pricing

Set to hit the market on April 29, 2026, at 10:00 AM JST, the Black Hole pen holder will be available for purchase at the following locations:

• - Castem's Rakuten Market Store (buy here)
• - meta mate Shinkawa Store (buy here)

This item will retail for a price of 1,980 yen (tax inclusive). In contrast, the Kinnikuman pen holder will be a limited edition product available exclusively at the Kinnikuman Museum in Numazu City, Shizuoka Prefecture, priced at 2,750 yen (tax inclusive).

Design Inspiration

These pen holders were conceptualized by highlighting the distinctive facial features of each character. Black Hole’s pen holder is characterized by a unique "face hole" that represents its connection to a four-dimensional space, from which nothing can escape once trapped. On the other hand, Kinnikuman’s design showcases his prominent “tarako lips,” ingeniously designed to hold pens securely in place.

Precision Casting Technology

Founded 55 years ago, Castem employs a precision casting technique known as the "lost wax method" to create these stunning products in stainless steel. Unlike traditional metal casting, precision casting enables the production of delicate and sophisticated shapes.

The materials used lend each pen holder a substantial weight, ensuring stability during use. Both items are designed to make a statement on your desk, fulfilling dual roles as pen holders and toothbrush stands. Picture having these iconic characters in your workspace or bathroom to brighten your daily routine!

Product Specifications

• - Black Hole Pen Holder

- Price: 1,980 yen (tax included)
- Material: Stainless steel with baked-in paint
- Dimensions: 40mm (H) x 30mm (W) x 20mm (D)
- Weight: Approximately 60g Note: As these items are handcrafted, slight variations may occur.

• - Kinnikuman Pen Holder

- Price: 2,750 yen (tax included)
- Material: Stainless steel
- Dimensions: 70mm (H) x 55mm (W) x 35mm (D)
- Weight: Approximately 300g Note: As with the Black Hole pen holder, slight variations may occur due to craftsmanship.

Where to Buy

• - Rakuten Market
• - Amazon
• - Castem Sales Site
• - meta mate Shinkawa Store

- Address: 〒103-0022 Tokyo, Chuo City, Nihonbashi Muromachi 3-2-1, Coredo Muromachi Terrace 2F
- TEL: 03-6910-3530
- Website

• - Kinnikuman Museum in Numazu

- Address: 〒410-0801 Shizuoka Prefecture, Numazu City, Otemachi 5-2-15
- Website

About Castem Co., Ltd.

Utilizing lost wax precision casting and metal injection molding (MIM) technologies, Castem specializes in manufacturing precision parts for various industries, including railways, machine tools, and medical devices. Since 2017, the company has expanded its operations to include product planning, manufacturing, and sales targeting individual customers. With innovations like celebrity handprint ornaments, hyper-realistic 3D face stickers, and even Pokémon insect cages, Castem continuously captivates audiences with its unique and bold creations.

Most notably, in the year of the Reiwa Emperor’s ascension, Castem made headlines with its rapid release of New Era merchandise, putting a Reiwa sake cup on the market just 2 minutes and 27 seconds after the announcement, a feat celebrated by various media outlets. This commitment to pushing boundaries in metal crafting is evident in projects ranging from paper airplanes to innovative agricultural machinery.

For inquiries regarding these products, please contact Castem Co., Ltd. at:

• - Name: Ikeda
• - Phone: 084-971-4510
• - Email: [email protected]

Whether you're a die-hard Kinnikuman fan or simply looking to elevate your desk decor, these unique pen holders are sure to add a delightful touch to your space!