It's a fully mechanic system, glass breaking, one coin can penetrate into the glass Dimensions of tray 16" x 12"x1.8"(40.5cm x 31cmx4.5cm) Very light weight, Powerful, Extra-thin design, Smart Note: This gimmick come with a organic glass cover. (The glasses, coins and 9V Alkaline battery for performace are not included and should be prepared by yourself) Battery require: 6PCS ALKALINE 9V batteries for device + 1piece ALKALINE 12V 23A battery for remote controller. Coin in Glass and Glass Breaking Tray Combination Trick This is a combination prop with the most two tremendous tricks ever, coin in glass and glass breaking trick. The performer begins by displaying a half dollar. He then tosses it but suddenly it vanish only to be heard arriving across the room. The coin visibly penetrates an inverted tumbler, landing in a mouth-up shot glass. After that, the magician puts a glass, wineglass or fluorescent tube on a table and then he moves some meters away; He pretends he's concentrating. After a few seconds the glass blows out! The glass may be covered with a colorless bell-type cover or a plastic bag. The combination tricks cause such an effect that the audience will remember forever. Dimensions of tray: 41cm*31.5cm*3 cm Complete with: a tray, remote control, organic glass cover and video with complete instructions. You should prepare a coin (a half dollar or any coin is smaller than a half dollar coin), 9 volt alkaline batteries, common glass.