Material: 316 Stainless Steel Size: 10255850-6mm 10255851-8mm 10255852-10mm 10255853-12mm 10255854-14mm 10255855-16mm 10255856-18mm 10255857-20mm 10255858-25mm Please allow1- 2mm error due to manual measurement and make sure you do not mind before ordering. shape:round weight: 10255850-64 grams 10255851-66.6 grams 10255852-68.6 grams 10255853-71 grams 10255854-74 grams 10255855-76 grams 10255856-79 grams 10255857-84 grams 10255858-90 grams quantity:20pcs You can choose the size you want.