Work better under pressure?
Ball clamp, made with 316L stainless steel, weight: 136g. Bars are 0.40" (10mm) wide x 3.15" (80mm) long. Screw lengths are 3.5"(87mm) - Balls are 14mm.
Screw both balls to tighten clamp.
If you'd like to order by phone, just quote product number 4777