Item specifics: Material:Brass Wire Use:Metalworking Type:Abrasive Block Bowl Type: Length: 50mm Shank Diameter: 3mm Brush Diameter: 18mm Flat Type: Length: 40mm Shank Diameter: 3mm Brush Diameter: 25mm Pen type: Length: 48mm Shank Diameter: 3mm Brush Diameter: 5mm (Eatch type 3Pcs) Package includes: 24Pcs Brass Wire Brush