• Drilling in reinforced concrete for the purpose of wiring and piping for air-conditioning , elecxtricity, telephone, gas and water supply, etc.
• Sampling of test core for concrete, rock and stone.
• Drilling of base holes for guardrail, fence post,and resin anchor in concrete,rock-bed,etc.
• Drilling in stone, refractory bricks and ceramics,etc
• Drilling in reinforced concrete structure, asphalt road and concrete producrs.
< /ul>

Features of electronic speed controller:

I. Gentle/Soft start

II.  Tacho feedback