GEX JEX Glass Harmony can also be used in any bottle mounting hole with a reversible M-stage glass harmony. Compatible Glass Harmony 450 series, 600 series, CUBE series (300) size approximately 18cm × approximately 19cm × approximately 5cm height (excluding slope, slope) set contents stages, slopes, ghettoes, nets and boxes. Only packed and shipped in chips. Please refer to the network if you don't know how to install. Use this product inside the gear and fix it with attached parts. Used for approximately 1 year. Please understand beautiful but used products.