Tamerica SB-41 SecureBind (Velo) Binding Machine, For Light to Moderate Use, 4-pin Puncher and Binder, 20 Sheets (20lb paper) Max. Punching Capacity, Heavy Duty Construction For Light to Moderate Use 4-pin Puncher and Binder 20 Sheets (20lb paper) Max. Punching Capacity Heavy Duty Construction 11" Punch Length