The all new VibraFlex 3500-R is a game-changer. Stationed behind the ABI Force, two staggered rows of 1/4″ or 1/8″ VibraFlex pins that are designed to remove tire compression and air out the field. Simply lower the rear hydraulic lift to engage the VibraFlex 3500-R for nail-dragging and Laser Grading applications.