Features: 1.The shape is smooth and shiny, no burr, clear lettering, high recognition, and quality in detail. 2.Smooth inner wall, no burr, small viscosity coefficient. 3.Mature processing technology, solve the problem of rough and uneven inner wall surface. 4.Cutting chamfering, chamfering cutting round, reduce the resistance of edges and corners to consumables, avoid blocking. 5.The interface is closely fitted and the contact surface is smooth, which can solve the problem of material leakage and effectively prevent the printing head from material leakage. specification: The shape is smooth and shiny, no burr, clear lettering, high recognition, and quality in detail. Smooth inner wall, no burr, small viscosity coefficient. Mature processing technology, solve the problem of rough and uneven inner wall surface. Cutting chamfering, chamfering cutting round, reduce the resistance of edges and corners to consumables, avoid blocking. The interface is closely fitted and the contact surface is smooth, which can solve the problem of material leakage and effectively prevent the printing head from material leakage. s: Material: Metal Size: Approx. 1.3 x 0.6cm/0.51 x 0.24inch Nozzle size options: 0.4mm/0.02inch Outer Roller Of Screw: 6mm/0.24inch Thread: M7 Package list: 10 x Nozzle