115 mm PLUS support rings (PrimaLuceLab, SKU: PLLANSU115P ) are a pair of lightweight, milled clamps designed for tubes with a diameter of approximately 115 mm. Thanks to full compatibility with the PLUS mounting system, they allow you to mount a Vixen or Losmandy rail under the telescope and guides, holders or accessories above the tube while maintaining perfect axiality.

Key Features of the 115mm PLUS Rings

• Inner diameter 115 mm – fits tubes 114 – 116 mm
• M6 threads in the PLUS system grid: 55 mm (Losmandy) / 20 mm (Vixen)
• hinge and knurled pressure screw – quick opening and secure closing
• CNC 6061-T6 aluminum body, hard anodized - high stiffness and corrosion resistance
• possibility of mounting rails or guides under and above the tube – easy expansion of the configuration

Set components

• two 115 mm PLUS support rings

Technical parameters

• Inner diameter: 115 mm
• mounting threads: 6 × M6 (PLUS standard)
• hole spacing: 55 mm (Losmandy) / 20 mm (Vixen)
• material: aluminum 6061-T6, anodized
• compatible tubes: Ø 114 – 116 mm
• manufacturer: PrimaLuceLab – Italy

115mm PLUS rings provide rigid, on-axis mounting for compact refractors or catadioptrics, offering full integration with the modular PrimaLuceLab PLUS accessory ecosystem.