Two Bar Squeezer Adjustable Nipple Clamps (Pair)

This pair of nipple clamps has two adjustable bars, one side of each bar is threaded, the other is free to move.

What this means is that, once the nipple is placed between the bars, you can turn the threaded rods on each size to slowly sque-e-e-e-ze the bars tighter... and tighter...!