If you mean 8mm LED strip corner connectors, they are small connectors used to join an 8mm-wide single-color LED strip around a 90° corner without soldering.
Common types:
L-shaped 90° corner connector — for turning the strip around a corner.
Flexible corner connector — useful for uneven or tight corners.
Strip-to-strip corner connector — joins two separate 8mm strips.
Strip-to-wire corner connector — connects the LED strip to a power cable.
⚠️ Make sure the connector matches your strip: 8mm width + number of pins (usually 2-pin for single-color strips). 10mm and 12mm connectors will not fit properly.