This is the Tenax Polyester Hardener for Tenax Polyester resins. This 45-ml tube will harden 1 - 1-1/2 liters of polyester resin. This is a HazMat (hazardous material). It can only be shipped via UPS Ground Delivery to the continental USA or UPS Standard Delivery to Canada. It is not able to be shipped via any other level of service or outside of the continental USA and Canada. Ships to CONTINENTAL U.S.A. and Canada only-- it is not available for delivery to Alaska or Hawaii.