White Comb Binding Spines 1/4-inch [pk of 1000] 6mm Standard 19 loop design for typical 11" edge comb binding machines Meets or exceeds all major brands (like GBC, Ibico, Fellowes, etc) but at generic pricing 1/4" diameter Plastic Binding Combs - 6mm color: WHITE, material: quality PVC plastic Trust Authentic Oregon Lamination Trademarked  Premium Binding Combs. Accept No Less