Comb Binding Machine 21-Hole, 450-Sheet, 100 Spines

Comb binding machine for clean, professional documents fast—punch up to 12 sheets per pass and bind up to 450 sheets for manuals, reports, and course packs. Built for Letter, A4, and A5 formats, it uses 21-hole comb binding with adjustable guides to keep pages aligned. A heavy iron base with powder coating, ABS shell, and metal side arms deliver stable, repeatable punches for offices, schools, and home workspaces.

• Delivers 21-hole punching with up to 12 sheets per pass for quicker finishing.


• Handles up to 450-sheet binding capacity for thick workbooks, proposals, and handouts.


• Fits Letter, A4, and A5 sizes with adjustable edge guides and side margins.


• Includes 100 comb binding spines (9.53 mm / 3/8") plus oil-absorbing paper for first-use cleanup.


• Captures punched chads in a debris tray to keep desks cleaner during batch jobs.

Stop outsourcing binding and keep turnaround times in your control. This manual comb binder combines a stable, powder-coated iron base with precise carbon steel blades, helping reduce mis-punches and uneven margins. The simple lever motion makes it easy to switch between punching and binding without a steep learning curve, while expandable comb support (3/8" to 2") covers everything from thin packets to thicker presentations. Stock up, set your margins, and grab yours today to finish documents in-house whenever you need them.

• Binding type: 21-hole comb binding


• Punch capacity: up to 12 sheets per pass


• Binding capacity: up to 450 sheets


• Comb size range: 3/8" to 2"


• Included combs: 100 pcs, 9.53 mm (3/8")


• Compatible sizes: Letter, A4, A5


• Materials: powder-coated iron base, ABS shell, metal side arms, carbon steel blades


• Weight: 7.7 lb (3.5 kg)


• Product size: 15.2 x 10.8 x 13.6 in (385 x 274 x 345 mm)