Manual Comb Punch 21 Holes Tender Binding Machine 10 Holes Clip Strip A4 Clip Strip Rubber Ring Binding Machine ,Easy to Use

Hole margin: 3/4/5mm Hole shape: 3*8mm Number of punched holes: 21 holes Number of punched sheets: 12 sheets of 80 grams Binding capacity MAX: 450 pages (A4-70g)