This Fundex F3500 is fully equipped with Olivier drilling tools for making displacement piles Ø670 with a depth of 36m. The Olivier couplings are specially developed for making piles in an open concrete system. Concrete in combination with reinforcement can be placed through the drill pipes. Due to the specific design, the couplings can always be easily connected/disconnected. There is never no torque or pulling force on the screws. On this jobsite in Andermatt – Switzerland, they use ProFound Drill Solutions PRO670 drill tips. The Olivier coupling is always pressed on the tube and then welded for perfect alignment and durability. The coupling is available in different sizes from small to XXXL.