You searched for "parallel clamp"
RS PRO
RS PRO Hot Galvanised Steel Beam Clamp, Fits Channel Size 41mm
Part: 221-6345
Galvanised steel C-clamp for securing beams to structural channels.
RS PRO
RS PRO Galvanised Hot Dipped Galvanised Beam Clamp, Fits Channel Size 41mm
Part: 176-6898
Galvanised beam clamp for securing equipment to structural channels in industrial facilities.