?Function:?The 3d extruder nozzle has good quality.The inner wall of the nozzle is smooth and the coefficient of viscosity is small, so the silk is more smooth.And the cutting chamfer design reduces the resistance of the angle to the consumables and avoids clogging.The smooth contact surface can effectively save printer resources. ?Strength: ?The Stainless Steel Print head is much more resistant to abrasion than brass nozzle so it is ideal for abrasive filaments like carbon fibers, TPU etc.If you need a lead-free nozzle for FDA-approved materials or medical devices,then Stainless steel material will be great. ?Application:? The 3d printer nozzle steel is compatible with all E3D V5 V6 1.75mm PLA ABS 3D Printers. ?Size:? A total of 12 3d printer nozzles in 5 sizes, 2pcs x 0.2 mm, 4pcs x 0.4 mm, 2pcs x 0.6 mm, 2pcs x 0.8 mm, 2pcs x 1.0 mm.Install with external M6 threaded connection. The nozzle threads are clean and well formed and the size is clearly stamped on the thread nozzles. ?Material:?Made of stainless steel material,the 3d extruder nozzle is durable,anti-rust ,corrosion resistant and lead-free.