The Austsaw Extreme Rotary Hacksaw Multi-purpose Circular Saw Blades are designed for the following materials:
Fibreglass
Metal, Aluminium, Colorbond, Steel (Guardrail, Pipes), Iron (Corrugated, Pipes)
Plastic (PVC Plastic / Pipes, Corrugated Roofing)
Wood (Softwoods, Hardwoods, Timber Planks, Weather Board).
 
Abbreviations:
B = Bore Size
T = Teeth
 
Product IDs and Calculations: 
230mm x 25 x 60: RHS2302560, Kerf: 1.8mm, RPM: 5,400
210mm x 25 x 40: RHS2102540, Kerf: 1.8mm, RPM: 5,400