Features: Achieve precise document alignment every time with this 21 hole comb binding machine, designed to eliminate misalignment issues common in traditional binders for efficient office use. Constructed entirely from metal, this binder offer superior stability and longevity compared to plastic alternatives, meeting the heavy duty demands of professional environments. Ideal for corporate offices, educational institutions, and frequent document handlers who require , high volumes binding solution for daily operations. Effortlessly handles varying document thicknesses in diverse settings, from compiling meeting materials to organizing training manuals or academic resources with compatible plastic comb spines. Features ergonomic handle design for comfortable operations and not slip base to prevent shifting during binding, ensuring secure processing of professional documents. Specifications: Materials: metal Size: Suitable for 21-hole binding Attributes: Commercial apron clip and comb binding machine Technical parameters: Supports binding of 12 sheets of paper at the same time, sturdy and metal structure ensures long-term use Usage scenarios: document binding in office environments, school project report compilation, corporate contract compilation, . Practicality: Efficiently and conveniently bind documents neatly into volumes, improving work efficiency and document management levels. Package Includes: Binding machine×1 note: Before using the accessory, please check if it is compatible. Pay attention to the storage methods.