I've seen some pics of that block before, I believe it's a brand new 12:1 Harken design.
His was probably a pre-production model since I don't think it is for sale yet.
We also use a 12:1 on the F18 (Ronstan) and it's great once you get used to it.

Looking at the pic again, what are those orange lines which seem to run across the traveller?

Last edited by Tony_F18; 12/04/17 08:14 AM.