Powerflex Polyurethane Bush kit for Vauxhall / Opel ASTRA MODELS Front Anti Roll Bar Mounting Bush 21mm (2 Piece) - PFF80-1203-21 - - Bush Size: 21mm - PRICE IS PER CAR KIT, NOT per bush. Powerflex usually price their bushes singly, but we have combined the QTY and price to keep it simple for you!