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10pcs Spring For 3D Printer Extruder Heated Bed
Features: 1. Super elastic 2. On the surface of nickel plating processing, have better corrosion resistance, and surface hardness Specifications: The wire diameter: 1.2mm Inner diameter: 5mm Outside diameter 7.5mm Height: 20mm Material: stainless steel circle number: 9 Package included: 10 x Spring