Bonsai Training Wire Set of 5 Sizes 100 % copper Bonsai training wire; save over $10,00 by buying this set of 5. Over 450 grams of wire with the 5 sizes in this promotion which is over 77 feet of wire to last a long time Comes in 5 different sizes:30 feet of 1.0mm-20 feet of 1.5mm-12 feet of 2.0mm- 8 feet of 2.5mm-7 feet of 3.0mm Train your Bonsai in the true traditional material of excellent quality Annealed Copper wire that will not rust Soft enough to bend and will not damage trees or any plant you wish to shape.