It is virtually unbreakable and has an edge that will never dull.

Businesses would love to have a virtually unbreakable encryption method for keeping their communications secret.

New computer power gives wide access to unbreakable or virtually unbreakable codes.

The British had discovered a substance that was virtually unbreakable and imparted no metallic taste.

And yet the system was such that his power was virtually unbreakable.

The best way to stave off competition is to build a relationship with your customers that is virtually unbreakable.

Bigger than conventional vials, they are easier to read, virtually unbreakable, and do not need adjusting during their working life.

As with his skeleton, these claws are virtually unbreakable and can cut nearly any known substance.

Since they are virtually unbreakable, aluminum shafts have to be replaced only when they bend.

Specially designed clear polycarbonate container is virtually unbreakable and lets you see inside.