Tower's 2-Day Shipping option is available in certain areas of the US and can under certain circumstances get your parcel to you in 2 business days. Orders must be received by before 12:00 noon central time (18:00 GMT/Zulu) Monday-Thursday or by 11:00 am on Fridays (17:00 GMT/Zulu) to be shipped the same day. Packages weighing over 10 lbs. incur additional charges. Alaska, Hawaii and Puerto Rico add $10.00 for any air shipment. Please note: delivery estimations are contingent upon timely credit card authorization and verification. Problems with authorization or verification of your credit card may delay the order. We will choose the most efficient carrier for your order based on size/weight of the package and where it is being shipped.