Eathtek Replacement Base Bottom Case Cover For Lenovo IdeaPad Z580 Z585 series, Compatible with part numbers 3ALZ3BALV00 E173569 Compatible Model Numbers: Lenovo IdeaPad Z580 Z585 Compatible part numbers: 3ALZ3BALV00 E173569 Replacement and high quality,Replace your faulty, cracked or broken bottom case base cover Each bottom case base cover is tested before shipping All pictures are taken from the real item, please check carefully before bidding.