<br>Shank Diameter: 3mm (1/8 inch), Wheel brush: 25mm / 1.0inch, Cup brush: 15mm / 0.6inch, Pen brush: 6mm / 0.2inch. These brushes will fit your hand drill, and drill press with a 3mm collet. <br>Function: This wire brushes are used to remove rust paint and weld spatter on all types of metal parts or surfaces. Fit for different angles of wood, metal materials, etc, polishing and grinding all kinds of rough surface, easy access into narrow holes and confined areas. <br>Widely Application: This brush tool can quick release burrs, rust, dust and the oxide layer. Ideal for rust removal, paint stripping, material removal, deburring sharp edges, edge blending and so on. You can keep one in your car, garage, office and kitchen. <br>High Quality: This brass brush sets are made of high quality brass and steel material, eco-friendly, durable and sturdy to use. The finest quality knot wire cup brushes to give you long service on the toughest cleaning jobs. <br>Specification: <br>Color: Golden&Silver (Shown as picture) <br>Material: Copper and Stainless Steel <br>Cup Shaped Wire Brush Size (L x W): Approx. 50 x 15mm / 2 x 0.6inch <br>Wheel Shaped Wire Brush Size (L x W): Approx. 40 x 25mm / 1.6 x 1.0inch <br>Pen Shaped Wire Brush Size (L x W): Approx. 50 x 6mm / 2 x 0.2inch (All Size Shown as Picture) <br>Package Weight: Approx. 156g <br>Package Included: <br>6 x Copper Wheel Shaped Wire Brushes <br>6 x Stainless Steel Wheel Shaped Wire Brushes <br>6 x Copper Cup Shaped Wire Brushes <br>6 x Stainless Steel Cup Shaped Wire Brushes <br>6 x Copper Pen Shaped Wire Brushes <br>6 x Stainless Steel Pen Shaped Wire Brushes