Specifications:Case material: ABS + plating (chrome plated)LED emitting color: Green， blue， redDiameter of inlet tube: 2cm (internal screw thread)Item size: 3 * 22cm / 1.2 * 8.7in (Diameter * L)Item weight: 110g / 3.9ozPackage size: 23.7 * 3.7 * 3.5cm / 9.3 * 1.5 * 1.4inPackage weight: 127g / 4.5oz