... automatic feeding device is optional. rolling shape: rolling thread, textured, ruled, roll bars etc Axis rolling machine Use for metal pipe ... Pitch range of 0.5-1.8MM Aperture range of rolling wheel : 25.4MM Maximum width 30MM Power :2HP Weight ... feeding device is optional.7, rolling shape: rolling thread, textured, ruled, rolling light,cross knurling, roll bars, rolling groove, and roll-offQuality ...