Comments about Blackburn Sing Sing Compact U-Lock:
Bought this lock due to its size and durability. So far, I'm very satisfied with the lock. The only downside to it was the bike attachment if you wanted it to be stored/attached to the bike while in transit. The locking attachment wasn't greatly designed so I just tossed it out. Instead, I attach the lock to my backpack. It's easier to access for quick lock-n-go process. If you are the type of person who would prefer to have the lock attached to the bike while riding, then buy a Kryptonite instead since their lock/bike attachments are better. However, if you don't mind attaching the lock to your waist, backpack or just hanging from your handlebars then get this one. It's easy to lock and unlock.
Was this a gift?:
Bottom Line Yes, I would recommend this to a friend