Living World Gravel Paper is custom cut to fit small rectangular bird cages. No cutting is required. Gravel paper simplifies cage cleaning and maintenance. The paper’s gritty surface helps trim bird claws. When ingested, the grit helps crop digestion. Includes 8 heavy sheets. Small Rectangular Gravel Paper Size : 30 x 35.5 cm (12 x 14 in), small, rectangular. Medium Rectangular Gravel Paper Size : 25 x 40 cm (9.5 x 15.75 in), medium, rectangular. Large Rectangular Gravel Paper Size : 40 x 39 cm (15.75 x 15.5 in), large, rectangular.