The Abus Diskus 20/70 is a tough padlock made of stainless steel, with a hardened steel shackle and the Abus-Plus disc cylinder known for its impressive manipulation and drilling protection.

We tested 13 of the best bike locks with sledgehammers, bolt cutters, drills and angle grinders. These 3 stood up to the abuse.

Disc or discus padlocks are similar in that their shackle is also less vulnerable to tampering. Bravo says, “If you have a really small circular saw that’s accurate, and you can really get in ...