Both systems, perma PRO MP-2 and PRO C MP-2, consist of a mechanical distributor and a special PRO / PRO C drive unit. Lubricant is transported from the LC unit (available in 250 cm³ or 500 cm³) through the drive unit into the MP-2 distributor. Each outlet discharges 0.25 cm³ of lubricant per discharge impulse in even amounts, regardless of counter pressure.