Stub-EASE II™ was not designed in a lab. It was designed by a General Superintendent who was responsible for a job site the day a $1.3 million incident happened — and who spent the next twenty years making sure it could not happen again.
Jeff Krause spent his career in high-rise construction as a General Superintendent — managing crews, managing risk, and managing the inevitable chaos of a concrete pour. Between 2002 and 2004, on the University Center of Chicago project with Turner Construction, a worker tripped on an unprotected conduit stub-up. The settlement that followed exceeded $1.3 million.
Jeff was not just a witness to that incident. He was responsible for that job site. That moment drove twenty years of product development — not in a lab, but on job sites, with electricians, with concrete finishers, with the people who actually have to deal with stub-ups every single day.
The result is Stub-EASE II™ — a complete, engineered system that eliminates conduit stub-up hazards before the pour, leaves a protected sleeve above finished slab, and extracts in seconds with a standard impact driver.
“If I’ve done anything, I’ve gotten rid of the conduit stub-ups.”
CSUE Technologies, Inc.
Founded by Jeff Krause
Chicagoland Area
Illinois, USA
US 10,320,167 B2 · US 10,742,008 B2
US 11,221,090 B2 · Additional patent pending
The incident that started it all. Jeff Krause, General Superintendent for Turner Construction, was responsible for the job site where an unprotected conduit stub-up caused a worker trip-and-fall that settled for over $1.3 million.
Two decades of iteration on real job sites, with electricians and concrete finishers, refining every component of what would become Stub-EASE II™.
US 10,320,167 B2 issued, protecting core elements of the Stub-EASE™ system design.
US 10,742,008 B2 issued, extending patent protection across the system.
US 11,221,090 B2 issued. An additional patent remains pending.
The complete engineered system — Bend-EASE™ elbow, Stand-EASE™ support, and Stub-EASE II™ cap — designed and tested to meet UL specifications for use as a transition fitting per NEC 300.15(F) (2023 NEC) / NEC 300.17(F) (2026 NEC). Compatible with both metallic (EMT/RMC) and PVC below-slab raceways — no added grounding burden in either configuration.
Designed by a General Superintendent, not a lab engineer — someone who had to answer for the hazard, not just theorize about it.
Every component engineered together as a system — the Bend-EASE™ elbow, Stand-EASE™ support, and Stub-EASE II™ cap are not a collection of unrelated parts.
NEC 300.15(F) compliance built in from the start — not retrofitted after the fact.
The extraction system is patented — spade bit plus impact driver in reverse. Nothing else on the market extracts this way.
Made in USA.
Every design decision starts with the worker standing on the slab.
Twenty years of field iteration, not a rushed first version.
Electricians, finishers, and superintendents shaped every part of this system.
Questions about the system, a project, or a submittal package — reach out.