... SDL 216B,GMC- SDL214,GMC- SDL212,GMC- SDL 210 single drum vibratory rollers effect powerful centrifugal force and great static ... materials, such as sandy soil, gravel, crushed stones, rock fillings and slightly cohesive soils, designed for large foundation constructions ... roller, and 16-20 ton road roller.Main Features of Single Drum Vibratory Rollers 1. Mechanical travel drive, double amplitude, ...