Clamp holders are not a specific brand but a category of industrial accessories used to secure clamps in various applications. They are commonly produced by multiple manufacturers worldwide, including companies like Grainger (USA) and Radwell International (USA), which supply industrial and maintenance products. These holders serve industries such as manufacturing, construction, and laboratory work, providing stability for clamps in machinery, piping, or experimental setups. Key products include adjustable clamp holders, magnetic bases, and bench-mounted variants, designed for durability and precision in demanding environments.