First-class chrome-vanadium bottlenecks, made in USA;Heavy, thick-walled models, with 12-piece ribbing on the inside ;Enables firm guidance of the slide, prevents annoying sweating ;527.973 small: Length 700mm, outer diameter 21.6mm, wall thickness 1-1.5mm, inner diameter 18mm, weight ca. 45g;527.974 medium: SS11 Length 70mm, inner diameter 20.5mm, outer diameter 23.3mm, wall thickness 1mm, weight ca. 49g;
CLAYTON