Maximum Hold for Major Transformations. When your tree needs more than just a trim, our 2.0mm Brown Anodized Aluminum Bonsai Training Wire provides the heavy-duty support required for structural styling. This is the "architect’s wire," designed to guide primary branches and even young trunks into dramatic new positions. Despite its impressive holding power, the anodized aluminum remains supple enough to wrap without the need for specialized tools. At 38 feet per coil, it’s the perfect amount for bold, professional-level restyling projects.