Supertech valve guards.Newly redesigned and now fully CNC machined for a higher quality and finer finish.Fits: OPEL / VAUXHALL C20XE - C20LET engine / Calibra / Vectra / Astra '88 -96References: Supertech valve locks.Newly redesigned and now fully machined on CNC for higher quality and more accurate finish.Fits: OPEL / VAUXHALL C20XE - C20LET engine / Calibra / Vectra / Astra '88 -96