Product dimensions: inner circumference 787mm, outer circumference 825mm, width 3/8 inch, thickness 7/32 inch, Manual measurements, please allow slight errors. Replacing OEM numbers : 532175436,521194149, which is a direct replacement for the old or broken one. Compatibility: Compatible with FOX QUADCUT Quad Cut 530E mower. Product material: This product is specially designed and made of rubber material, which has a long service life and is not easy to damage. Easy to install: Direct replacement without adjustment, perfect compatibility and high reliability., Manufacturer: Briny River