105mm PLUS support rings (PrimaLuceLab, SKU: PLLANSU105P)

105 mm PLUS support rings (PrimaLuceLab, SKU: PLLANSU105P ) are a pair of aluminum clamps designed for tubes with a diameter of about 105 mm — such as 4″ f/6–f/7 refractors or large aperture finderscopes. Compliance with the PLUS mechanical standard facilitates the mounting of Vixen / Losmandy rails under the telescope and guides, holders or wedges above the tube, guaranteeing perfect alignment of the entire set.

Key Features of the 105mm PLUS Rings

• Inner diameter 105 mm – fits tubes 104 – 106 mm
• M6 thread grid in PLUS standard: 55 mm (Losmandy) and 20 mm (Vixen)
• hinge and knurled pressure screw – quick opening and secure closing
• CNC milled 6061-T6 aluminum, hard anodized - high stiffness and corrosion resistance
• possibility of simultaneous installation of rails or guides under and above the tube – simple expansion of the photo-guiding configuration

Set components

• two 105 mm PLUS support rings

Technical parameters

• Inner diameter: 105 mm
• mounting threads: 6 × M6 (PLUS standard)
• hole spacing: 55 mm (Losmandy) / 20 mm (Vixen)
• material: aluminum 6061-T6, anodized
• compatible tubes: Ø 104 – 106 mm
• manufacturer: PrimaLuceLab – Italy

The 105mm PLUS rings guarantee stable, axial mounting of small telescopes and full integration with the modular ecosystem of PrimaLuceLab PLUS accessories.