Heavy Duty Comb Binding Machine 450 Sheet 21 Hole Handle Manual Paper Punch Binder with 100pcs Starter Kit 3-8 Comb Binding Spines

Specifications: Solid metal base, non-slip feet, anti-rust paint. Paper Margin: 2.5/4.5/6.5mm Square Hole Size: 3*8mm, 21 holes Type of knife: Single knife, removable Paper Format: A4(210mm×297mm) paper or smaller sizes Punch up to 12 PCS(20lb paper) at one time. Or bind 450 sheets(2" comb spine). Comb Binding Spines: 100pcs, black color, PVC material NOTE: 1. It is only used to bind normal papers 2. Please clear paper scraps before use 3. In order to make the binding machine work better, grease the knife head