Binding Machine, 21-Holes, 450-Sheets, Paper Punch Binder with Starter Kit (200 Combs: 8/10mm) & 3 Adjustable Margins (3-5mm) for A4, A5, Letter, Ideal Office, School Home

【Professional Punch & Bind Performance】- This 21-hole binding machine delivers office-ready results, punching through 12 sheets and binding up to 450 sheets in one operation. Ideal for deskside use, it produces clean, polished reports and presentations at the office, in the classroom, or at home 【Multi-Size Compatibility】- This comb binding machine punches A5 (15 holes), A4 (21 holes), and Letter size (19 holes) with ease. The adjustable edge guide offers three margin settings—3mm, 4mm, or 5mm—for accurate alignment and a neat finish across document sizes 【Sturdy Build for Lasting Use】- Constructed with a cast iron base and powder-coated finish, this binding machine resists rust and daily wear. Carbon steel blades and metal side arms ensure reliable long-term performance in busy offices or schools 【Effortless Operation】- Featuring an ergonomically curved handle, this binding machine requires minimal force to punch and bind. Its smooth mechanism makes it comfortable to use throughout the day—ideal for high-volume tasks in any workspace 【Starter Kit Included】This book binder machine comes with a complete starter kit: 100 x 8mm and 100 x 10mm 21-ring plastic binding spines, ready to use right away. No need for separate purchases—simply unpack and start binding, offering a practical, cost-effective solution for offices and schools