KOKUYO 2-Hole Punch PN-G37D — Heavy-Duty 37-Sheet Capacity, A4/B5/A5 Adjustable Guide, Black

The KOKUYO PN-G37D is a compact, heavy-duty 2-hole punch that cleanly punches up to 37 sheets and adjusts quickly for A4, B5 and A5 paper widths.

If you need a reliable two-hole punch for everyday office filing, study notes or small-batch binding, this Japan-imported KOKUYO model blends sturdy metal components with a palm-friendly profile. Designed for consistent performance, it keeps hole alignment accurate with clear size markers and a triangle centre guide — useful when you switch between paper formats. The punch has a foldable handle for storage, a waste-collection tray for tidy operation, and an anti-rust blade coating; initial test punches may be needed to remove residue from manufacturing oil.

How does this punch handle thick stacks without jamming?

The PN-G37D uses a heavy-duty steel mechanism and a stable base to deliver even pressure across the sheet stack. Its engineering prevents tilting or misalignment so multiple sheets are pierced at once without tearing. The ergonomic lever reduces the force you need to apply, making it manageable even for repeated use.

• Capacity: up to 37 standard sheets per punch
• Durable steel punch heads for consistent, clean holes
• Wide base to maintain stability when punching thicker stacks

Can I switch between A4, B5 and A5 quickly and keep holes centered?

Yes — the device has a clear, adjustable paper guide with printed markers for A4 (297 mm), B5 (257 mm) and A5 (210 mm) to set your paper width precisely. A triangle centre-mark helps you align margins so holes sit correctly every time. Once set, the guide locks in place for repeatable results without measuring each sheet.

• Printed size markers for A4, B5 and A5 paper
• Triangle centre guide for symmetrical hole placement
• Adjustable guide that stays secure during repeated punches

What features make it easy to store and keep tidy?

The punch’s handle folds down to reduce height and take up less desk or shelf space when not in use. A removable bottom compartment collects paper chads so you don’t need to clean the workspace after every session. Lightweight but robust, the unit is simple to move and store in small offices or home study areas.

• Foldable handle for compact storage
• Detachable waste tray for clean, fast emptying
• Palm-sized footprint fits tight drawers and shelves

Is there any maintenance or special care required?

The blades are coated with anti-rust oil from manufacturing, so you may want to run a few scrap sheets through the punch before use. Periodic emptying of the waste tray and occasional light wiping of the metal parts keeps it operating smoothly. Avoid forcing the lever beyond its designed capacity to prolong component life.

• Perform initial test punches to remove oil residue
• Empty waste tray regularly to prevent jams
• Wipe surfaces dry and avoid overloading beyond 37 sheets

Who is this for: The KOKUYO PN-G37D suits office workers, teachers, students and home organisers who need a reliable, compact two-hole punch that handles moderate batch punching. It’s ideal for anyone who files documents into two-hole binders or folders and switches often between A4, B5 and A5 sizes. If you want a Japanese-built tool that prioritizes precise alignment, stable punching and neat waste collection in a space-saving design, this model is a practical choice.