Blue Fireball 1.25" Spacer Ring with 0.75" Extension # S-1C

Our Price: $14.95
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In Stock (4 Available)
Ships by Next Business Day
Our Product ID: PAAR-BF-S-1C
Manufacturer SKU: S-1C
Item Can Ship: Worldwide
Blue Fireball 1.25" Spacer Ring with 0.75" Extension  # S-1C

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Product Details


  • 1.25" extension ring/barrel spacer
  • Provides 0.75" (19.1mm) of spacing
  • Allows you to securely set or vary the spacing between 1.25" components
  • Useful for making eyepieces parfocal or to change the reduction factor of focal reducers
  • Has standard 1.25" filter threads (male on one side and female on the other)


  • Precision machined from aluminum and black anodized
  • Threaded to accept standard 1.25" astronomy filters


  • Total Length = 0.89" (22.6mm)
  • Extension Provided = 0.75" (19.1mm)
  • Length of External Male Thread = 0.08" (2.1mm)
  • Thread Specification (External Thread) = M28.5x0.6 Male
  • Length of Internal Female Thread = Greater than 0.39" (10mm)
  • Thread Specification (Internal Thread) = M28.5x0.6 Female
  • Maximum Outer Diameter = 1.25" (31.7mm)
  • Weight = 0.3oz (9g)