Other hand grippers can feature a plastic construction that might be more ergonomic, but ultimately begins to weaken over extended use. I also liked how uniform the Captains of Crush Series felt ...

It's called, quite simply, the No. 4, the toughest in his company's "Captains of Crush" line of hand grippers. It takes 365 pounds of pressure—about as much as it takes to smush a spud—to ...

based company founded by Randall Strossen in 1988. Its flagship device is the Captains of Crush gripper. While grippers of the early 20th century often were made of wood, and later in the ’60s ...