Fit Rod Dia.(Approx): 25mm/ 1';Install Base Size: 76 x 17mm/ 3' x 0.67'(L*W) Install Hole Size: 7.5 x 4.5mm/ 0.3' x 0.18'(L*W);Install Hole Centre Distance: 65mm/ 2.5' Total Size: 8 x 7.6 x 1.7