Just push the plunger to reveal the four tiny claws, and press them against your skin. They'll grab a chunk and hold on fiercely. They hurt quite a bit too. You can use them almost anywhere, but, oddly enough, they usually refuse to grab onto nipples.

Extreme Sensation Claw Clamps Specs and Benefits:

Size: 2.85 inches in length, 0.3 inches max opening diameter

Material: Stainless steel

Color: Grey/Black