Spartacus Aluminium Saw Blade 250mm x 100Teeth x 30mm Bore The Sparticus Aluminium/Non-Ferrous Metal Circular Saw Blades are specially designed for cutting all types of non-ferrous metals such as aluminium, copper, lead and plastics. They have expansion slots the help keep the blade flat. The Triple Chip Ground Tooth (TCG) gives excellent finish to the cut Reamed bore to ensure precise fit to spindle. Silver braze to ensure tip is bonded securely to body. Body hardened and tempered to maintain trueness. The Spartacus name for traceability and a guarantee of quality. High grade alloy steel plate body precision ground to maintain flatness. To Fit The Following Machines: Ryobi BT3000.