★Material: Aluminium Alloy
★Mounting Hole Spacing: 14mm/0.55in, 4 M3 tapped mounting holes
★Servo Disc Diameter: 20mm/0.8in
★Pinking Aperture: 5.5mm/0.22in,Pinking Quantity: 25mm/1in
★Suitable for standard servos, like Hitec, Parallax, Futaba, and etc. the size is (40*20*36mm) /(1.57*0.8*1.42in)