Sheeba Engineering Co. Offers Gravity Lock with Small Cup Bottom. Sheeba Engineering Co. Supplies a wide range of carriers and accessories like Perforated Triangular Spindles, Loading and Unloading Basket Dye Springs etc. For yarn and fibre dyeing in textile industries. The Gravity Lock with Small Cup Bottom can fit in plastic dye tube without top plate with automatic resetting for threaded bolt M16 or 5/8" BSW. The Gravity Lock is suitable for plastic dye tube having sizes - 58 OD X 53 ID.