Material: Solid Aluminum Alloy
Outer Diameter: 203mm
Inner Diameter: 145mm
Height: 21mm
Outside Mounting Hole Distance: 170mm
Inside Mounting Holes Distance: 160mm
Inlcudes: 2 Pcs Aluminum Rings + 8 Screws + 2 Gasket Seals
Features: Waterproof + Anti-corrosion + Shockproof