wheel-mounted, easily to move FYLQ100D Wheel-mounted down the hole drill: light to operate in large working; with threewheels, can tow by the motor vehicle; through adjust the pin of arch board, to drill 90°190°drilling depth to 50m; use middle pressure can reach a fast drilling speed; Suit for every kind ofopen air mine, water and electricity, railway, highway blast hole and every kind of sculpt ...