General purpose galvanised pump clamp

Internal thread inside the fixed arm and the pump, accessories may be adapted.
Spreading function.
Fixing screw with concave pressure adjustable with a 6 faces 3mm wrench.
Spheroid cast iron, reinforced by triple ribs.
Galvanised and notched bar.
Burnished screw with rolled trapezoidal thread (30% more resistant).
Cut off pump made of burnished steel.
Hydraulic press fit of the fixed jaw on the bar.