Conical twin screwbarrel Material: 38CrMoALA. This kind of material is applicable to double alloy and common molding screw. Specification: Φ35/80, Φ45/90, Φ45/100, Φ51/105, Φ55/110, Φ60/125, Φ65/120, Φ65/132, Φ68/143, Φ70/140, Φ80/143, Φ80/156, Φ92/184 If you want more detailed information about our products or you have any questions, please contact with us !