Material: high-quality 304 stainless steel Seiko never rust kind more beautiful than the picture. Male length: 80cm inner diameter: 4.8cm6.8cm height: 1.2cm thickness: 1.3cm. Neck diameter: 13.7 cm 14.9 cm height: 1.2 cm thickness: 1.8 cm weight: 3.3 kg. Female: Length: 80cm inner diameter: 4.6cm 5.6CM height: 1.4cm thickness: 1.4cm. Neck inner diameter: 12cm height: 1.4cm thickness: 1.8cm weight: 3.0kg. Note: due to the different measurement method and measuring instruments, so there will be a little deviation, not a quality problem or introduce discrepancies.