I am a big fan of their Pitsburg 6,12, and 18" clamps. I proably have 2
dozen in the shop and will buy more once they go on sale.

Irony. I bought 14 1/2" Pittsburg pipe clamp fixtures recently @$2.99 each
to help with building my 1st bench, and last tuesday just bought 14 34" black
pipes. These things work really well too! Hard to imagine that many clamps
for only $120. HF is great for some things.

Alex