Rc Plane Control Horn And Clevis Set 1x Control Horns 1x Clevis 1x Screw Description Horns 4 Holes(1.5mm) Length Of Base 12mm Width Of Base Approx 8mm Length Of Horn From Base 20mm Overall Length 31mm Hole Diameter 1.5mm Weight 0.6g(1set) Material Nylon Fixing Lock On Description Total Length 29mm Diameter Of Hole 1.8mm Weight 0.5g/pc Separation Between The Two Clevis Arms 2.8mm