a clamp in the shape of a c where you tighten it by twisting the end.

A C-clamp is a clamp that is in the shape of a "C" that screws down to hold pieces together. A Bar-Clamp is a long clamp made from a bar or steel rod that has grips on each end that can be adjusted along the bar and engages ratchets and then can be screwed down to tighten. So a long clamp with C shape end clamps coule be called a C-bar clamp.

bench voice, voice grip, g clamp, c clamp, hand clamp, jumper cable.

these are only hand tools

You can either use a c clamp or c clamp vise grips hope this helpa

you can use the c clamp just tighten it slowly