White Plastic Spiral Binding Coils 5/16" (8mm), 54 Sheet Capacity, Qty 100 12-inch long Spiral Coil Binding Spines (Pack of 100) 4:1 Pitch, 4 loops per inch 8mm (5/16" inside diameter) Binds up to 52 pages of standard 20 lb bond paper Colors May Vary Somewhat from Photos, Manufacturer's Color designation is White (No PMS designation)