When trying to adjust them to the table I attached something to the curved clamp arm and now it's unusable. It may be rated for a hundred pounds when clamped down, but the hold down arm certainly can't support that much weight on its own. They are tiny too.
Optimized Plastic Spring Photography Backdrop Support
11 Review
WETOLS Angle Clamp 2Pcs Woodworking: Precision Tool for Perfect Angles in Woodworking Projects
11 Review
TOFL Woodworking Clamping Cabinets: πͺ The Ultimate Storage Solution for Workshop Positioning
12 Review
MAXPOWER Piece 3-4-6 Inch
11 Review