Technical Specifications: Color: Green Type: Rolling Mill Item Type: Jewelry Tools & Equipment Material: Stainless alloy thickest compressibility: 6.5MM thinnest compressibility: 0.03MM Roller Width left up: 85mm Middle Roller width: 50mm Maximum opening: 0-5mm Square wire (+/-0.01mm): 1,1.5, 2, 2.5, 3, 4, 6 Combination Round length shape: 120(mm) Round Diameter: 58(mm). Gold & Silver Jewelry DIY Tool Rolling Mill Machine Stainless Steel Alloy Green. Square wire (+/-0.01mm): 1,1.5, 2, 2.5, 3, 4, 6. Feedback is very important to us.It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it's non-workdays, please kindly be patient and wait till Monday.