Refill your Biodiesel Cube TM. Return your Biodiesel Cube to us and then order this refill and we will refill and return your cube to you as soon as possible. We will replace the screw cap and include a new valve. Price includes Federal excise tax and there is no state excise tax in Texas. If you choose not to refill then please recycle all components of the cube. PLEASE DO NOT ORDER THIS ITEM UNLESS YOU ARE RETURNING YOUR CUBE FOR REFILL.