Ride magazine said,
FANTASTIC value, it took almost two-and-a-half minutes with a Level-Three Attack to remove this lock. It didn't fit all bikes we tried it on but fitted through the disc hub on most modern bikes. Weight: 244g (highest tested).
The lock was examined on the workbench and then tested on the bike for realism. We subjected the lock to a sequence of tests starting with basic brawn and progressing to tooled-up and clued-up. Expert locksmith, Dave Bowen from Bets Security was brought in to oversee and help with testing. The Level-Three Attack is the clever stuff and allows the use of expensive battery-powered tools and a specialist picking tool. These attacks require tool knowledge and practice. Anything requiring a Level Three Attack should stop any opportunist thief or joy rider.
(Taken from an article in the November 1999 edition of Ride Magazine.)