Durable Field Binders and Leaf Sheets help you take and organize field notes your way. Useable in any weather. Specifications: Field Layout Loose Leaf Field Book Sheets are punched to fit standard six- ring binders. Single Sheets are ruled on both sides and used consecutively. 4-1/2" x 7-1/4". Pkg. of 50 sheets. Printed with waterproof blue and red inks on fine quality 50% rag ledger paper specially treated to give "high wet strength". This paper retains its strength and working surface when dried even after having been subjected to extreme weather conditions. Same format as S298360 Field Book (4 � " x 7 �") are perfect for recording data that will be filed or reorganized. Fits standard 6 ring binders. Sold in 50 packs