Adjustable Z-Axis Endstop Holder

All you Need:
1x M6x50 Bolt (M6x50 Schraube)
1x M6 nut (M6 Mutter)
2x Messing Pipe 4mm x 0.5 mm (Messing Rohr)
2x Messing Round Profild=2.9mm (Rundprofil)
2x the quill of a pen (Feder eines Kugelschreibers)