Features thickened ABS base with slip resistant bottom for stability and debris storage container tray for cleanup after punching Suitable for professional, students organizing exams, and scrapbooking craft enthusiasts requiring quickly, precisely document, presentation sheet management The round hole puncher featured 30 holes Hole diameter: 5.5mm Hole Distance: 9.5mm Paper Feeding Depth: 4mm Punching sheet capacity: 5 sheets letter size paper Built-in metal construction ensures durability and strength Adjustable positioning ruler supports 7 specifications including 30 holes, 26 holes, 22 holes, 18 holes, 16 holes, 14 holes, 12 holes refill paper for perfect compatibility with binders and specialty papers Streamlines report binding in, categorize journal paper, or organize school paper in classroom, crafting booklet, photo album, scrapbooking, or for binding file, card making Very suitable for punching paper, cardstock, chipboard, refillable notebook journal refill paper and other art craft project