"Hans Hoyer" Heritage "Kruspe Style" F/Bb Double Horns have string & 3B ball bearing linkage models, gold brass leadpipe on brass models, a large (XL) throat bell, a three-dimensional adjustable finger hook, adjustable thumb lever, engraved valve caps, soft case.Features: 6802G-L Kruspe Style wrap String linkages .468"/11.9mm bore 12.204"/310mm Kruspe large (XL) throat yellow brass bell Adjustable finger hook & thumb lev...