Product Name: Fly Wheel Gear Place of Origin: China Specifications: 1) Inner diameter:318.0mm, 334.0mm, 360mm, 420.0mm, 432.0mm 2) Outer diameter: 381.0mm, 380.0mm, 404.0mm, 467.7mm, 485.5mm 3) Number of teeth: 125, 125, 132, 154, 160 4) Thickness: 22.0mm, 16.0mm, 16.0mm, 22mm, 18.5mm