Specification BaseType : Fixed Brand : Huanyu BulletPoint1 : Roller width: 130mm Roller diameter: 65 mm BulletPoint2 : Semicircle: 2.5x1, 3x1.25, 4x 1.5mm Flat width: 57mm Lines: 1.0, 2.0, 3.0, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0mm BulletPoint3 : Gear ratio: 4:1 BulletPoint4 : Maximum opening: 0-5 mm BulletPoint5 : Flat area (+/- 0.01 mm): 130 mm Color : Silvery Hh-rm02c ItemName : Huanyu PEPE Combination Hand Rolling Mill 130mm Roller Mill Jewelry Tools & Equipment, Roller Length 130mm*Dia 65mm (Silvery HH-RM02C) ItemTypeKeyword : power-milling-machines Manufacturer : Huanyu Material : Aluminum MaximumRotationalSpeed : 10000 rpm PartNumber : WJJ-146c PowerSourceType : Manual ProductDescription : Description Utilizing a unique hardening procedure which allows to market superior rollers that will perform beautifully.Our rollers are made from a high quality carbon steel alloy that offers excellent wear resistance and the outer 3mm of the rolls are hardened to around 60 HRC for superior deformation resistance. Our new units are all powdered coated for superior corrosion protection and appearance.This rolling mills feature true gear reduction with easily turned short handles.