Locking System: plastic piece with metal interior, to fit or hold on wrist.Main features: - Inviolable, high reliability and durability (with interior metal) - As holder and regulator (No interior metal) Colors: Available in stock. Possibility of reproducing special colors (Pantone). Customization: relief mold possible.Tape widths: 10 to 15mm. Other measures upon request. Presentation: Mounted on tape