Universal Bearing Driver Tool SetSet provides one durable handle and 12 sizes of anodized aluminum adaptors : 8 mm, 10 mm, 12 mm, 15 mm, 17 mm, 20 mm, 25 mm, 30 mm, 32 mm, 35 mm, 40 mm, and 47 mmBlow molded case to keep tools clean and organizedSet can be used with a hammer or shop press8-30 mm ID / 32-47 mm OD