What is a coup drill working principle

The places where the impact drill will pierce are concrete walls.

Pulse drill is used only to drill concrete and wall. There are wheels wrapped in each other for the impact work. You realize that it comes across a hard place.

Pulse drill visuals

Darbeli matkap nasıl çalışır

Önceki cevap: Tour Guide Conditions Sonraki Cevap: What does the flower mean