Question about BaByliss Pro Silver FX

BaByliss Pro clippers come in a range of shoe sizes, although the specific sizes you mention (4, 5, 7, 8, 9 mm) are not included with the product. Accessory sets for BaByliss Pro hair clippers generally include different lengths of clipper, as shown in some sets that offer lengths from 1.5 to 19 mm. For the exact sizes you're looking for, it would be best to check directly with the manufacturer or an official retailer.