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 longevity. Specifications: Center hole specification is M6. Center hole distance is 35mm. Compatibility: These wood chipper blades are designed for a wide range of shredders used in gardens or other outdoor spaces for efficient branch shredding. Product Dimensions: Each blade measures 6.4cm x 2.55cm with a center distance of 35mm between the two holes. Package Contents: 2 shredder blades. Material: Alloy steel Color: Silver Size: 6.4cm x 2.55cm (2.52in x 1.00in) Center distance between two holes: 3.5cm (1.38in) Note: Please allow slight variations of 1-2cm due to manual measurement.