A strong lock or chain is only useful if it can be positioned and closed correctly on your bike. Check the actual opening and the complete locking arrangement b...

What does keyed alike mean? Keyed-alike locks share the same key. Choose this option when buying two or more compatible locks that you want to operate with one...

The Roundlock works with our Protector 13mm and 16mm chains. For a 19mm or 22mm Protector chain you need the RL21A socket. Which socket do I need? Protect...

You've got a padlock and you're looking for a chain to use it with. Or you've got a chain and you're wondering what padlock is going to fit it. These are common...

Lock size is a critical factor when pairing a lock with a security chain because the two components must work as a single system. A mismatch in size can signifi...

To check if a padlock will fit a security chain, you need to compare the padlock's internal clearance with the internal dimensions of the chain link - not just...

Closed-shackle padlocks are generally more secure than open-shackle padlocks because they expose less of the shackle to cutting tools. However, the right choice...

Below is a short video overview of the SFB DIB D-Lock/U-Lock, showing how it can be used with various of our Protector range of security chains:

Below is a short video overview of the SFB RoundLock, showing how it can be used with our Protector 16mm and 13mm chains and, with the optional RL21A socket, wi...

The RoundLock has a 22mm pin which will fit through a majority of motorcycle brake discs but it won't fit through most scooter discs. There's an easy way to wor...

My Roundlock key only turns halfway Check that the key is fully inserted. It should turn through 180 degrees to operate the lock; a key that is not fully seated...

Locks can freeze, which can be a pain if you need access. Follow these tips to prevent yours from freezing in the first place - and what to do if yours has froz...

If you have lost a Roundlock or DIB key, keep any remaining keys and the metal key-number tag. These help identify the correct key. I still have a working key...

There are those who have broken a key or those who will break a key. Accidents happen! Some keys are more prone to being bent than others. The keys supplied wit...

Have your locks been independently tested? Yes. Our RoundLock and DIB D-locks achieved Sold Secure Gold and Diamond grades across several categories during the...

All locks need a little bit of love. Locks used outside and exposed to the elements. You an avoid this with proper maintenance. Dirt, salt and water can sti...

You might have seen a CEN Rating on a padlock and wondered what it is. The CEN grade stands for Central European Norm and it's a padlock testing standard. The C...