Features: · Made of special alloy steel · Manufactured to strict tolerances · Tempered to ensure consistency · Straight cutting · Rounded back for flexibility in use Specifications: - Length of Blades: 5.117" / 5-15/128" / 130mm - Blades Size: #4/0 - Thickness: .0086" - 0.225mm - Width: .0175" / .445mm - Teeth per Inch: 64 - Drill Size for Piercing: #77 - Saw blade size #4/0 is recommended for B&S Gauge 22 - 24, can be used for other gauges.