Quality: The Garden Shredder Blades are made of alloy steel, featuring uniform heat treated hardness, sharp edges, strong shock resistance, and good impact resistance. These characteristics ensure durability and longevitySpecifications: The center hole specification is M6. center hole distance (35mm) Compatibility: These Wood Chipper blades are designed for a wide range of shredders used in gardens or other outdoor space for efficient branch shreddingProduct Dimensions: Each blade measures 6.4cmx2.55cm with a center distance of 35mm between the two holesPackage Contents: The package includes 2 shredder bladesSpecification:Material: Alloy SteelColor: ArgentSize Chart:6.4cmx2.55cm/2.52inchx1.00inchCenter Distance Between Two Holes 3.5cm/1.38inchPackage Includes:2 Wood Chipper BladesNote:Please allow slightly errors 1-2cm differences due to manual measurement.