Tension fastening units of type UKN.P-1 are designed for securing tension clamps on rectangular-section reinforced concrete poles of type SV with dimensions ranging from 185 to 245 mm. The UKN.P-1(2) model is recommended for suspending two optical cables mounted in parallel. The breaking load of the units is 30 kN. The weight of UKN.P-1(1) is 4.0 kg, and UKN.P-1(2) is 4.4 kg.