Don't be fooled by cheap, nasty and inferior products. Our Heavy Duty disc locks are guaranteed to prevent opportunistic theft of your valuable bike. These heavy duty disc locks can not be broken with ordinary bolt cutters. We have tested these locks with grinders, cutters and even an axe and nothing broke it. S&P- Security Products Impact resistant die cast body 10mm hardened steel locking pin Plastic Dust cover over lockable key hole- with 2 keys Heavy 1kg solid body Custom carry case