These items are used to protect lead screws, shafts, spindles,, guide ways, cylinder, pistons and other valuable parts of machine from heavy volume, coolant, dust, oil, hot chips and stray sparks etc. Bellows are manufactured in various shapes such as rectangle, squire, round, hexagonal, octagonal other polygon types by leather, rexine, canvas, neoprene cloth and other special material depending upon the application conditions.