I have a pristine-looking 2x Rokunar converter for Hasselblad cameras, with both caps. To my knowledge all the third party 2x converters for Hasselblads are the exact same optically (Vivitar, Komura, etc.), but the Rokunars have better built bodies in my opinion. They also match better with the CF lenses than some of the other converters. I purchased it from KEH in Ex+ condition a little over a year ago and I just don't find myself using it, so up for sale it goes. Asking $40 + shipping.