M5x12mmx1mm Stainless Steel Round Flat Washer for Bolt Screw 100Pcs Product Name: Flat Washer; Material: Stainless Steel Weight: 72g; Package Content: 100(+/-2%) x Flat Washer Main Color: Silver Tone; Inner Dia: 5mm/0.2" Outer Dia: 12mm/0.47" Thickness: 1mm/0.04"