Specifications: Durable and practical with small, good polishing effect, high efficiency, low cost Widely used in the micro-electronic devices, and other industries. Fit for your polishing need, can use for metal and nonmetal materials. Suitable for metal surface cleaning, derusting, grinding, dusting, deburring, polishing, stripping residue. Made of high quality brass and steel material, eco-friendly, durable and sturdy to use. Excellent workmanship. Quick release burrs, rust, dust and the oxide layer. Fit for different angles of wood, metal materials etc, polishing and grinding all kinds of rough surface. 36pcs full kit wire brush set, mini size, can meet your different requirement, economical and practical. Included 18pcs copper wire brushes and 18pcs steel wire brushes. Item Name: Steel Wire Wheel Material: Copper, Stainless Steel Quantity: 36Pcs Cup Shaped Wire Brush Size: 50mm x 15mm/0.97" x 0.59" (Approx.) Wheel Shaped Wire Brush Size: 40mm x 25mm/1.57" x 0.98" (Approx.) Pen Shaped Wire Brush Size: 50mm x 6mm/1.97" x 0.24" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included: 18 x Copper Wire Brush Wheels 18 x Steel Wire Brush Wheels