The curved steel frame is locally welded. The machined plastic parts are made of recycled plastic, and are dishwasher safe and virtually unbreakable. The square drive shaft is heat treated and hardened for maximum life. All hardware is stainless steel and will never rust. Frame is powder coated for long life/outdoor use. The Fender Blender uses a simple friction drive to spin the blender blade fast, while remaining simple and easy to service.