FeaturesQ-Connect Comb Binder 25Binding capacity up to 450 sheetsPunches up to 25 sheetsMaximum binding size 51mm. Punching margin 2-5mmDimensions: W490xD415xH165mmThis versatile Q-Connect Professional 21 Hole Comb Binder 25 punches up to twenty-five sheets at once and can bind a maximum of 450 sheets with up to 51mm binding combs, which is great for making reports, presentations and company literature.  This economical binder is simple to use and will provide you with professional looking documents every time.