Desk lamps on clamp

Clamp

— fastening based on a screw mechanism: one sponge of such a device is stationary, and the second can move back and forth when the screw rotates. When twisting the clamp, the sponges compress the countertop, fixing the lamp on it. Clamps are bulkier and "slower" than clip-on clips and take longer to open and close. In addition, when tightening the screw, you should be careful not to overtighten it and not damage the countertop. On the other hand, a properly installed screw clamp provides a very tight and secure mount, suitable for even the largest and most unstable table lamps.