OB – Oval Bellows (20×60–65×170 mm/0.9×2.4″–3.0×7.0″)Read more OBF – Oval Bellows Friction (15×35–65×170 mm/2.0×4.1″–3.2×7.4″)Read more OBL – Oval Bellows Long (40×90 mm/1.8X3.7″)Read more F-OB – Food, Oval Bellows, non-detectable (10×30–30×60 mm/0.39×1.18–1.18×2.36”)Read more F-OB – Food, Oval Bellows, detectable (10×30–30×60 mm/0.39×1.18–1.18×2.36”)Read more