**Brief Introduction**
SDL12 handcuff‑style chain lock is an innovative differentiated product departing from conventional single‑end chain‑lock structures. Its unique dual‑cuff design can secure one vehicle’s wheel‑to‑frame or fasten two bicycles / e‑bikes together, while also anchoring vehicles to posts or railings. Key‑operated for dependable security, it delivers versatile locking possibilities for end‑users. For distributors, its distinctive construction creates clear market differentiation amid homogeneous lock‑product competition, making it an attractive SKU for independent‑webstore sales and physical accessory shops.

**Material & Craftsmanship**
Quenched alloy‑steel chain links. Reinforced zinc‑alloy die‑cast dual‑cuff lock head for high impact and pry resistance. Anti‑drill precision copper key cylinder. Woven fabric sleeve covers chain links to avoid frame scratches and reduce clattering noise.

**Key Features**

1. Innovative handcuff‑type dual‑loop architecture supports multiple locking modes, including securing two vehicles at once.
2. High‑strength alloy‑steel chain paired with reinforced lock head delivers robust resistance against violent attacks.
3. Anti‑drill copper key cylinder provides stable protection against technical picking.
4. Fabric sleeve protects paintwork and mitigates metal collision noise.
5. Highly recognizable appearance; supports laser‑engraved logos and custom color‑box packaging.

**Application Scenarios**
Bicycles and e‑bikes for multi‑vehicle parking security; well‑suited for residential compounds, parking lots and shared‑mobility supporting scenarios.

**OEM & ODM Service**
Custom laser logos, color‑box packaging and fabric‑sleeve colors. Bulk private‑label orders are accepted.