【Replacement Black Steel Bracelet for Cartier WSBB0015 – 20x12mm Convex End Fit】 – Precision-engineered replacement black steel bracelet designed for Cartier Ballon Bleu de Cartier WSBB0015 “Black Knight / 黑骑士” 42mm model--6. Features the signature convex/curved end (凸口) that seamlessly integrates with the Ballon Bleu case architecture – 20mm lug width with 12mm convex end (20凸12mm)--15. Crafted from solid stainless steel with black ADLC-style coating to match the original case finish--6. Essential replacement part for restoring or upgrading your WSBB0015 timepiece.
Perfect Fit for WSBB0015 “Black Knight” – Specifically engineered for Cartier Ballon Bleu reference WSBB0015 – 42.1mm case diameter, 13mm thickness-6. The 20x12mm convex end (20凸12mm) ensures a seamless, gap-free installation – identical to the original bracelet specification for 42mm Ballon Bleu models--15.
Convex凸口 Precision Design – Features the signature convex/curved end (凸口) that mirrors the rounded “pebble-like” curves of the Ballon Bleu case-. Ensures a flush, OEM-quality fit – no awkward gaps or protrusions.
ADLC-Style Black Coating – Finished with black ADLC-style coating (Amorphous Diamond-Like Carbon)-. Matches the original ADLC碳镀层（非晶金刚石）精钢 case finish-6. Provides superior scratch resistance and a stealthy “Black Knight” aesthetic that defines the WSBB0015-2.
Solid Stainless Steel Construction – Crafted from high-quality solid stainless steel – no hollow or stamped parts. The black coating is applied to match the original case finish. Corrosion-resistant and built to last through years of daily wear.
Complete with Hardware – Includes all necessary screw bars and connector links for installation-. Many sellers provide precision installation tools for easy DIY resizing.
OEM-Spec Alternative – Precision-machined to match original Cartier specifications. A cost-effective solution compared to OEM Cartier bracelets. Note: These are aftermarket replacement parts, not genuine Cartier® parts.
Easy Installation – Direct replacement for the original bracelet. Compatible with standard link removal tools. Professional installation recommended for best results.
