Free D-I-Y Fizz Giz Cap Kit Request FormWe will send you a Fizz Giz D-I-Y carbonation cap absolutely free to evaluate and enjoy. Most people have a hard time finding the valves. Here's your opportunity for a free one on us. No obligation on your part. Thank you for completing this form. You will hear from us shortly. Only U.S. destinations are eligible for the Free Cap Offer.