Profile: International Bellows & Covers, Inc. provides a full line of standard and custom manufactured bellows & covers sewn into round, square or rectangular shapes with collars or flanged ends. Our applications include protection of screws, cylinder rods or guides. Our product protects exposed parts, such as lead screws, ball screws, splines, shafts and U-joints. Our square and rectangular bellows are used for the expansion connections between ducts, protection of translating mechanical devices or protection of square or rectangular machined parts.