With every box of Havel's brand surgical blades you order between now and December 31, 2008, you will receive one box FREE! Due to the limitations of the web, we are not able to mix and match per your preference. If you want to order one size and get another size free, you must call us at 1-800-638-4770 during normal business hours EST. Please note: Orders for Swann-Morton blades, QlickSmart, handles, mini blades and chisel blades are not included in the free box offer.