grease gun: 1. with LCD. 2. with flexible outlet or rigid outlet. 3. with American standard or European standard. grease gun:The Electronic Oil Meter Gun with rigid tube and manual tip, with the appropriate connection to establish a controlled flow through the meter. Meter:1) 5 digit liquid crystal display (shows the quantity of single-fueling, and memorizes the total amount )2) 4 units: L, GAL, ...