This is a 10-pack of those handy little rubber strain relief boots from Uxcell.

They're designed to protect cables and cords right at the point where they enter a plug or device, stopping them from bending sharply and breaking.

The inner diameter is 5mm (about 0.2 inches), and they're 28mm long.

They're a clean white color and made from flexible rubber.

A simple, cheap way to make your cable management cleaner and extend the life of your cords.

Just be aware there's a standard California Prop 65 warning on the packaging.