They look to be an upscale version of the ones in 1:48 they made for the SSW kit.
I had a set for my SSW build but the small PE parts were a PITA to fool with and in the end are still overscale. I'm sticking with the Gaspatch ones in 1:48 and the detail is finer and their just about ready to install straight out of the pack.
Also, the fact that they also include the other pair with solid resin jackets is rather a step backwards to my why of thinking. I that large a scale "see through" jackets are mandatory.
Chuck