Material: Titanium
Note:Φ14mm is Titanium Alloy
Φ18mm,Φ25mm,Φ28mm,Φ32mm is 100% Titanium
Features: Never Rusty Anti-allergic Weight Light Hardness is Good, Can be Linked to Keys, Flashlight, Camera, Can be Portable
Spec: Φ14mm Outside Diameter 14mm
Φ18mm Outside Diameter 18mm ; Inner Diameter 15mm ; Thickness 2.2mm
Φ25mm Outside Diameter 25mm ; Inner Diameter 21mm ; Thickness 2.5mm
Φ28mm Outside Diameter 28mm ; Inner Diameter 23mm ; Thickness 3mm
Φ32mm Outside Diameter 32mm ; Inner Diameter 26mm ; Thickness 3.5mm