The X-Laser EZ Variance Kit for New Lasers is the fastest and most reliable means of obtaining a US laser light show variance from the FDA. All operators of Class 3B and 4 laser products must have a valid variance before using any laser products in a show. Unlike some imitations, X-Laser has countless hundreds of approvals to our credit with a greater than 99% approval rate. Get legal and be safe with the X-Laser EZ Variance Kit. Valid only for genuine X-Laser USA products. The EZ Variance Kit only is good for X-Laser branded products and not FDA approved for other branded products.