Hole Opener Corporation is a provider of specialized drilling equipment for hole opening, underreaming and well abandonment. We can ship our custom hole opening equipment anywhere in the world. We have a manufacturing and testing facility in Houston, TX. Hole Opener Corporation was founded in 1978 and has been responsible for some of the most versatile hole openers since then. The RHO-type hole opener has been praised by many drilling companies as one of the most cost effective underreaming tools in the world. These are products manufactured and sold by the Hole Opener Corporation.