MroMax 3D Printer Die Spring 20mm OD 25mm Long Medium Load Compression Mould Die Spring 3D Printer Ender Electric Part Red 1PCS 3D Printer Spring Bottom Connect Leveling Compatible with 3D Printer Bed

"Size: Hole Diameter (Outer Diameter): 20mm/0.79in; Rod Diameter (Inner Diameter): 10mm/0.39in; Free Length: 25mm/0.98in (+/-2mm).

Load Type: Middle Load.

Rectangular section, closed-end design.

Material: Made of Spring steel material, the surface is red painted, not easy to rust, more durable."