Designed by Everdigm, the crawler drill models ECD45 and ECD45E have a bit diameter of 75 to 15 mm (3-4.5 "), a T51 (T45) rod diameter, a rod length of 3,660 mm (12') and a drilling depth of 22 m (72'). The tramming has a gradeability of 0.73 kgf/cm2 at 22° (F11°/R11°) with a speed of 0 to 22 mph (0 to 35 km/hr). They have a weight of 29,317 lbs (13,300 kg) at heights of 28.9´(8,818 mm) and 7.7' (2,350 mm).
The drifter model, made by Montabert, has HC150RP revolutions and 2500 bpm/21 kw at 0 to 130 rpm.