⚡ Sigma Electric ProConnex 41309 Ground Clamp 0.5 to 1-Inch, Single-Pack, Bar Review

. but could certainly be a little stronger. If you over-tighten the "ears" will pop without warning (don't ask me how I know), so it's best to be safe when installing.

Nothing to say about the ground terminal; The only problem is that I had to use a socket wrench with a flat head screwdriver as I didn't have enough torque to loosen the screw with a regular screwdriver. Or am I old and weak?

Good value, as described, worked as expected. As with any item of this nature, it's best to evenly tighten each screw until snug, then finish with a quarter or maybe half a turn to lock them securely. Do not overtighten to avoid damage.

This unit accepts a 1-1/2" OD antenna mast, although it is only recommended for use on masts up to 1" in diameter is specified (note). The oversized collar listed for 1-1/2" is too large for a 1-1/2" OD mast. I suspect the size listing is for heavy walled 1 ID water pipe).

This clamp does not come loose. The ends appear to be fused together, the screws don't move. Very disappointed that I had to wait so long for something that didn't work and wasn't worth returning. Update - I was able to get the screws out after hours of struggle and injuries. Doesn't update the rating.