What size alen key is it for the front brake caliper on a 1.8 cdx astra estate?

For the front brake caliper on a Vauxhall Astra 1.8 CDX estate, you typically need a 7mm Allen key (also known as a hex key) to remove the caliper bolts. However, it's always advisable to double-check your specific vehicle's manual, as variations can occur based on the model year and specific brake components used.