Fangrui Product Details Portable And Suitable Design: Size Approximately 18.11 X 3.54 X 3.15 Inches / 460 X 90 X 80 Mm, Our Paper Binding Machine Is Comfortable To Install On Many Desktops Without Taking Up Too Much Space; It Flaunts The Compact Size For Easy Storage, Making It A Great Companion For Your Workspace. Widely Applicable: The Screw Binding Machine Is Suitable For Punching Holes A4, A5, A6, A7, B5 And B7, Which Is A Good Addition To Many Workspaces; 1 A4 Sheet Can Punch 30 Holes; This Product Can Meet Most Of Your Needs. Professional Ability: There Are Positioning Columns And Rulers On Both Sides Of The Book Binder, Which Facilitates You To Determine The Drilling Position; The Ultra-precise Drilling Ability Can The Files You Bind And Give Them Professional Appeal. Easy To Use: Our Spiral Hole Puncher Is Designed With A Hand Push And Is Very Easy To Use; You Can Make The Right Hole With Just A Light Move; It Is A Great Companion For Hand Books And Offices. High-quality Materials: The Binding Machine Adopts Hig