Features: _x000D_ Made of high quality nickle plated iron, these screws and nuts are sturdy and durable. _x000D_ These cage screws and nuts are installed in square or rectangle holes. _x000D_ Fast and convenient to install, they can be disassembled and repositioned. _x000D_ They are the best choice to replace welding nuts. _x000D_ Preferred fasteners for electrical cabinets of railway, vehicles, network cabinets, mechanical mold, etc. _x000D_ _x000D_ _x000D_ Specification: _x000D_ Material: Nickle plated iron _x000D_ Size: M5*16, M5*20, M6*16, M6*20 (Optional) _x000D_ Quantity: 20pcs _x000D_ Weight: 160g~208g / 5.6oz~7.3oz (approx.) _x000D_ _x000D_ _x000D_ Package list:_x000D_ 20 * Screws and Nuts 1Made of high quality nickle plated iron, these screws and nuts are sturdy and durable. 2These cage screws and nuts are installed in square or rectangle holes. 3Fast and convenient to install, they can be disassembled and repositioned. 4They are the best choice to replace welding nuts. 5Preferred fasteners for electrical cabinets of railway, vehicles, network cabinets, mechanical mold, etc.