Features: 1) Outside slot hull material: aluminum alloy 2) Glass clip material: aluminum alloy 3) Outside slot hull: a) Width: 45mm b) Height: 13mm c) Thickness: 1.0mm 4) Glass clip: a) Width 7.5mm b) Height 13mm c) Thickness 0.7mm (marks thickness differ + 0.1mm - 0.05mm) 5) Switch and the other inner parts that spread to move the accessories are manufactured from sheet iron 6) Iron accessories: electroplated in zinc 7) Surface color: ancient copper and silver white