ACT clamping jaw pairs (consisting of two identical clamp halves) of the Twin Series according to DIN 3015, Part 3 for common diameters of between 6 and 25.4 millimetres. Clamp bodies made of flame-retardant plastic PP-V0, tested and V0-classified according to UL94. Integrated elastomer strips prevent the accumulation of salt water in the crevice between the tube clamp and tube (self-draining). Drainage channels aid the drainage of salt water. STAUFF ACT clamps: Anti Corrosion Technology. Reduce crevice corrosion on the tube.