**Brief Introduction**
SDL10 medium‑size combination chain lock is one of SENDE’s core mass‑volume chain‑lock models. It strikes optimal balance among link dimension, chain length, weight and procurement cost, combining solid anti‑theft performance with competitive market pricing. Its 5‑digit key‑free combination removes key‑management headaches. The alloy‑steel chain is wrapped in heavy‑duty woven fabric sleeve to prevent frame scratches and suppress rattling noise. Field‑proven in large‑volume global shipments with mature supply chain and reliable lead times. Perfect for cross‑border sellers, import wholesalers, retail supermarkets and brand private‑label projects.

**Material & Craftsmanship**
Quenched alloy‑steel chain links are stamped and welded, optimized for both cut‑resistance and moderate overall weight. High‑density tear‑resistant nylon fabric sleeve with secure stitching prevents tearing or peeling. The lock head is integrally die‑cast from high‑strength zinc alloy with durable internal 5‑digit combination gear set. Reserved printing zones on fabric sleeves enable brand imprinting.

**Key Features**

1. Well‑balanced performance‑to‑cost ratio ideal for large‑scale market distribution with broad compatibility.
2. 5‑digit resettable combination for hassle‑free key‑free operation for end‑users.
3. Woven protective fabric sleeve avoids metal‑on‑frame scratches and dampens collision noise.
4. Flexible chain loops easily around bike frames, wheels, lampposts and parking bollards for flexible locking positions.
5. OEM‑ready: custom printed logos on sleeves, adjustable chain lengths and multiple packaging options.

**Application Scenarios**
Urban bicycles, mountain bikes and commuter e‑bikes for everyday city parking. Also works for basic security for scooters and outdoor equipment.

**OEM & ODM Service**
Chain length, fabric‑sleeve colors and prints are customizable. Neutral stock and custom packaging available with flexible MOQ.