**Brief Introduction**
SDU08 combination U‑lock merges the robust anti‑theft strength of U‑locks with convenient keyless combination operation. Conventional key‑operated U‑locks frequently encounter issues of lost or forgotten keys. SDU08 adopts resettable digital dials so end‑users can set their own passcodes without carrying physical keys. The alloy‑steel shackle delivers reliable pry‑cut resistance. A dedicated frame‑mount bracket is included to attach the lock directly onto bicycle frames instead of storing inside backpacks. It ranks among hot‑selling combination U‑lock items on overseas cross‑border marketplaces for wholesalers and cross‑border sellers’ mass‑distribution needs.

**Material & Craftsmanship**
Quenched alloy‑steel shackle with high hardness against cutting and prying. ABS outer casing protects internal combination mechanisms. Wear‑resistant ABS dials supporting passcode resetting. Heavy‑duty plastic frame‑mount bracket included as standard accessory.

**Key Features**

1. Digital‑dial keyless unlocking with user‑resettable passcode for great operational convenience.
2. Alloy‑steel shackle retains excellent anti‑cut anti‑pry performance characteristic of U‑locks.
3. Frame‑mount bracket enables easy on‑bike storage without backpack occupation.
4. Field‑proven mature construction with low failure rate verified via large‑scale market deployment.
5. OEM support for custom housing colors, laser‑engraved logos and color‑box packaging.

**Application Scenarios**
Urban commuter bicycles, mountain bikes, e‑bikes; ideal for city cyclists who prefer keyless operation.

**OEM & ODM Service**
Custom housing colors, laser‑engraved logos and packaging. Ample neutral‑logo stock enables fast shipment.