In Wick Drain applications, pre-drilling is needed from time to time in order to overcome the soil layers with high SPT values. As Raga Makina, we serve you both in machine manufacturing and field applications with our solutions for your needs. With our RAGA RR9 model pre-drilling machine, we made it possible to perform Wick Drain application by manufacturing pre-drilling on land with a high SPT value and a slope of up to 12°.