The Sold Secure Gold rated Granit X-Plus 540 replaces the legendary X-Plus 54 with a more stylish look while retaining its safety features. The parabolic 13mm square section shackle is massively resistant to cropping & twisting. It is securely held in place by the Powercell double locking mechanism that offers the highest protection against hitting & pulling attacks. The X-Plus locking system with automatic keyhole cover allows ease of use while offering protection against dirt, corrosion & also picking. An LED illuminated key & code card is provided, the lock can be fitted to frames with Eazy KF brackets.