I accidentally bought the wrong size, so two of them have been opened. They have never been used, but please refrain from purchasing if you are concerned about minor details. PIAA wiper blade refills, 3 types: 300mm, 430mm, and 500mm. - Brand: PIAA - Size 1: 300mm (WGR30) - Size 6: 430mm (WGR43) - Size 10: 500mm (WGR50) Thank you for looking.