Replaceable synthetic stakes. Base Ø31 mm. Improved spindle guidance. High positioning precision. Tip sizes (outer Ø x inner Ø): Ø2.60 x Ø1.60 mm (Yellow) Ø2.10 x Ø1.20 mm (Red) Ø1.70 x Ø0.60 mm (Gray) Ø1.50 mm (Blue)