30 hole punch binding machine capable of punching up to 30 holes with 3/8inch (9.5mm) intervals, accommodating paper sizes including A4, A5, A6, A7, B5, B6 & B7 Spiral binding machine hole punch allows manual punching of up to 6 sheets of paper at a time, each hole having an inner diameter of 7/32inch (5.5mm) Binding machine spiral coil binder hole punch features a detachable fixing clip that is parent, facilitating easy adjustment and observation of paper sizes Coil binding machine hole puncher is slim and , space-saving and convenient for desktop use, ideal to carry around home office classroom Spiral coil binding machine is ideal for DIY projects such as photo albums, , , diaries, reports, recipes, and other endeavors Colour:As Shown Material:plastic Package Contents: 1 set x binding machine Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.