Features include parfocalization, 1¼" filter threads, captive lock screws that won't fall out and full multicoatings.Tele Vue Barlows use multi-coated high index glasses for optimum aberration correction, exceptional contrast with virtually no light loss.
I paid for it $105 + shipping.
Asking $85. Used only a few times. Excellent conditions.
Attention ETX users: This barlow doesn't fit the eyepiece holder of the ETX very well. I found it hard to use with my 105-EC.
Buyer pays shipping costs (around $5 for USPS Priority Mail in the COUS).
I accept PayPal (no credit card please) and money orders.