**Brief Introduction**
SDU12 lightweight U‑lock solves the pain point of excessive weight of traditional heavy‑duty U‑locks adding riding burden. While preserving fundamental anti‑theft performance, overall weight is optimized downwards. Full‑wrap silicone bumper safeguards expensive bicycle frame paint. Key‑operated with included frame‑mount bracket. Highly suitable for road‑bike and performance‑mountain‑bike riders sensitive to equipment weight. Balancing security, weight and portability, it fits sports‑accessory distribution channels and online retail sales.

**Material & Craftsmanship**
Weight‑optimized alloy‑steel shackle balancing weight and baseline security performance. Full‑wrap high‑elastic silicone anti‑scratch bumper. Precision copper key cylinder. Complete frame‑mount bracket accessories.

**Key Features**

1. Weight‑reduced construction lowers carrying burden for weight‑conscious sport‑cycling users.
2. Full‑wrap silicone bumper prevents frame‑paint scratches caused by lock‑body impact.
3. Reliable key‑operated copper‑cylinder mechanism for stable performance.
4. Frame‑mount bracket enables secure attachment onto bike frames without backpack storage.
5. OEM options for custom silicone‑jacket colors, laser‑engraved logos and packaging.

**Application Scenarios**
Road bicycles, performance mountain bikes and urban commuter bikes for weight‑focused cycling enthusiasts.

**OEM & ODM Service**
Multiple silicone‑jacket color choices, custom logos and color‑box packaging. Supports small‑batch mixed orders.