Description This item is a set of 2 pcs 3D printer extruder gear, manufactured with premium plastic and stainless steel materials, so that it can serve you for many years. material can its durability and practicability. It is perfect for professional or amateurish use. Features -Color: Black -Material: Plastic, stainless steel -Size: About 3.40X3.40X2.07cm/1.34X1.34X0.81inch - Portable and lightweight, easy to carry. - and , performance. - Though it is simple in design, it's so practical when you use it. - The excellent workmanship of our product will bring you a good using experience. - Made of material with stable performance and long service life.