●Optimum for drilling pilot holes into siding boards and hardwood.●Work material: Siding board, wood, hardwood.●Machining Hole Diameter (mm):30 to 200●Shaft Diameter (mm):10●Shaft type: Three grooves●Drillable depth: One side 25mm/Both sides 50mm●Compatible Model: Electric Drill●Main body: Carbon steel(S55C)●Replacement blade: Carbide●Center drill: With carbide tip●Hexagonal wrench
