Product Name: Leveling Spring Knob Component Kit
Material: Knob nut is made of high quality brass, screw and spring are made of high quality stainless steel, rust and corrosion resistance, long service life.
Size: Screw M3x40mm; Spring 5x7x20x8(IDxODxHxTurns)
Suitable for 3D Printer Hot Bed / Platform, DIY models and so on.
Package: Pack of 4 sets Leveling Spring Knob Component Kit- 4pcs M3 Knob Nut + 4pcs M3x40mm Screw + 4pcs Spring