Custom sizes available. Graves can supply our Eastwind brand of diamond belts and discs in almost any size you need. Belts can be joined or made as a continuous length for split drums. To determine the cost, simply calculate the area of your belt/disc in square inches. Multiply the area by $1.00 to determine your price. Example: You need a 42 inch long and 3 inch wide belt for your belt sander. 42 x 3 = 126 square inches. 126 square inches x $1.00 = $126.00. Email us your requirements. Shipping normally takes 4-5 days after you place your order for custom sizes, some sizes may take longer.