
Is your bike lock at risk of being cut with an angle grinder? An angle grinder is a hand-held tool with a toothless, abrasive rotating disc that is held at an angle to the metal being cut. The less expensive (but still effective) cutting disc usually has a metal core made of high-carbon steel or spring-steel alloys with manganese, or stainless steel. Industrial abrasive powders are bonded to the metal disc, such as cobalt, iron, copper, nickel, or diamond dust.

Do you need a composite U-Lock?
Today’s thieves use battery operated angle grinders. Bonded to the metal disc are abrasive powders creating the cutting surface. The disc is coated with industrial abrasives (cobalt, iron, copper, nickel, diamond powder), or a small hub of mild steel or aluminum holding abrasive compounds of resinand fiberglass mesh. The friction of metal on metal creates sparks and noise, but that does not deter a thief who can go unnoticed for thirty seconds. Click on a variety of locks, chains, and shackles to find what you need for your own bike’s security.