Find a Sold Secure Approved Product

Roundlock RL21 and RL21A

The intriguing RoundLock RL21 provides a perfect partner to our Protector 16mm chains, and the optional RL21A socket extends this to the Protector 19mm chains.

New: An adaptor is under development to allow the RoundLock to be used with the Protector 25mm Titan chain.

When these locks are assembled through the appropriate chain link, the central shackle is completely obscured from attack, leaving basically nothing for the thief to do other than scratch his head!

• Sold Secure approved and Police Secured-by-Design approved
• In accordance with our philosophy to be as helpful as possible, the RoundLock approval is for the lock without a specific chain, so users have much more flexibility when combining this lock with a wide variety of approved chains
• Can also be used as a motorcycle disc lock, given a compatible opening in the disc (clearance for the 21mm thick shackle will be required).
• Chrome plated for excellent corrosion resistance
• Supplied with 3 keys
• Can be factory keyed-alike, including with the DIB D-Locks.