This 5-pack anodized bonsai training line can be used as a kit to set up a budding bonsai artist with five of the most practical wires,or for economical replenishment of bonsai wires for experienced bonsai artists or enthusiasts. The five sizes of this kit are 1.0mm,1.5mm,2.0mm,2.5mm and 3.0mm.5M per roll, Anodized aluminum is easier to bend than copper wire,so it is easier to use and less likely to dig and damage .The process also imparts wire properties that more resistant to corrosion and uses these beautiful colors to better complement or blend into your tree.Aluminum will not rust,these anodized wires will not rot EASY TO BEND:Anodized aluminum training wire is easier to bend than copper yet still very strong,making it better for beginner bonsai trainers and convenient for experienced bonsai artists. COMBINE WIRES:Double wrap wires of smaller gauges in parallel to create additional strength varieties you need for your thickest branches. Colour:Black Material:aluminum Package Contents: 5* training wires Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.