Rainbow Vision Sand Picture - Standard Size Injector Set This is the standard size injector set to regulate the air in your KB Collection / Rainbow Vision Sand Picture. This special injector set for our Amazon customers include 2 needles and one injector. We ship these injectors via USPS First Class Mail by secured bubble wrapped envelope for only the United States with flat the rate shipping charge of $4. Please note this Standard size injector works for most of our KB Collection / Rainbow Vision Sand Pictures, but not for thicker wood frames sand pictures such as Movie Large & X-Large sizes, Pygmy, Black Beauty, Sahara, & Walnut Tree. Those large injectors must be contacted with us.