Neewer 8 Pieces 1000 Gram Stainless Steel Calibration Weight Set (500g 200g 2x100g 50g 20g 20g 10g) with Case and Tweezers for Digital Jewellery Scale Science Lab Weights Educational & Hobby Weighing Scales Mini Pocket Balance Scale Made of stainless steel, it won't get rusted. Elaborate made and defect free. Shiny and elegant appearance. Material: stainless steel Permissible Error: +/-.3g