MAGIKON 7-Pieces 500 Gram Stainless Steel Calibration Weight Set (200g 100g 100g 50g 20g 20g 10g) with Case and Tweezers for Digital Jewellery Scale Science Lab Weights Educational & Hobby EASY TO USE AND STORE!Comes in a plastic storage box and tweezers HIGH QUALITY MATERIAL!Made of stainless steel PERMISSIBLE ERROR::+/-0.003 gram Content Weigh Set: 200/100/100/50/20/20/10g