Masters of Steel is a Spain-based brand founded in 2019 by collectors seeking Steelbook editions for films that lacked them. Its team brings together expertise in manufacturing, logistics, technology, marketing, and management, with a focus on creating distinctive products for film enthusiasts worldwide. The company offers a growing catalogue of custom Steelbook cases, with nearly 2,000 designs, alongside Steelbook ONE editions, box sets, phone cases, and protective Steelbook sleeves.

Each custom Steelbook is made to order and handcrafted using professional-grade machinery, quality materials, and inks. Its 360-degree printing covers the case, including the edges and opening area. Customers can choose a design from the catalogue or create a personalized case using an online editor with image uploads, finish options, disc-holder choices, and a real-time preview. Masters of Steel also organizes designs into themed universes and collections. Orders are securely packaged and shipped worldwide, with estimated delivery times of three days to two weeks. The brand has sold more than 4,000 Steelbooks and continues to add new designs.