Integral Bow Spring Series All Categories Our Integral One-Piece IBS centralizer uses a laser cut, robotic manufacturing process to produce a repeatable, tight tolerance centralizer with unmatched product quality Model 103Available in Phenolic or Aluminum materials View Product Model 103SC ShortShorter in length and more rigid than the 103 View Product Model 103UR - UnderreamDesigned for installation in underreamed wellbores View Product Model 118 Two-Piece Integral BowHigh-strength hinge design View Product