Magnetic Base with Knob Hold blueprints, calendars, important memos, visual aides, work plans, and more with these convenient, heavy duty magnetic bases. Ideal for warehouse, workroom and office use. Each magnet features durable chrome plating and easy grip knob for positioning. Rectangular Base Magnet with Knob Painted with bright blue enamel, these heavy duty base magnets feature durable steel construction. Sturdy handles allow easy repositioning, or use as a retrieving magnet to pick up small tools and scattered nuts and Room No.906A, RongXin Mansion, Lianhua Chi South, Fengtai District, Beijing, P.R.C. Post Code: 100055