Penis Valve Stem Caps Glow In The Dark Colors! Gag April Fools D-Stem Universal Fit Car Bicycle Motorcycle 3D Printed Dick Balls Fun For sale are sets of 4 Glow in the Dark Valve Stem Caps that have been 3D printed. These valve stem caps are fantastic gag gifts, white elephant presents, and stocking stuffers for that prankster you know! Perfect for April Fool's pranks! These caps are ready to thread right on! These now come in Standard and Large Sizes! Threads on the inside are the same, Only the actual D is larger! Selling in sets of 4 in the Glow in the Dark colors that are awesome! The Blue glow does need a bit more light to glow as bright as the green but overall they all glow brightly! Glow in the Dark base colors are White! They will Glow the selected color once they are Charged under bright light and placed in the dark. Orange Glow does have a base color of orange. If interested in a bulk amount I will make large quantity discounts! Please message me about that!