Product No. 3674 2X Barlow  DX 31.7mm Cat. No. 1020 p. 53

An accessory that extends the focal distance of objective lens
Enables observing at a higher magnification with your current eyepiece.
Suitable for astronomical observation that requires a short focus.
Aberration is highly corrected by the 3-element lens.
Product No.3674-05
Elesticity : 2x (2.6x if diagonal prism used)
Applicable Eyepiece Diameter : 31.7mm
Eyepiece Diameter : 31.7mm
Lens Coating : Fully multi-coated
Weight：140g
Attachment : Cap