Genuine Erowa Manual Chuck 80mm EDM Switzerland. Manual chuck that adjusts with a 5mm allen wrench. Tested and adjusts smoothly and holds tight. Chuck measures 80mm x 80mm. Shows signs of age and use. I was unable to locate a model number on this. No base or bolts included. Please review photos to determine condition and identification. Item is sold as is with No Returns. Will be shipped via USPS Priority.