Material: Stainless Steel Inner Size: 10286450-8mm 10286451-10mm 10286452-12mm width size:18.5mm Please allow 1- 3mm error due to manual measurement and make sure you do not mind before ordering. shape:round Note:Due to variations in monitor display, the color of products may slightly be different when received in person. We do our best to take photos so that they appear true to color. weight: 10286450-70 grams 10286451-71 grams 10286452-71.5 grams Quantity:10pcs