Invisible Connections supplies the concrete construction industry with ‘unseen’ telescopic connection systems for stairs and landings, beams and columns. We are also specialist manufacturers of the FERBOX reinforcement continuity system, to application requirements.

All Invisible Connections’ products are designed to meet industry demands for improved safety and construction efficiency, whilst ensuring cost competitiveness. Our Product Selection Guide provides an at a glance overview of all our products, plus key features and benefits.

Our telescopic connection systems are endorsed by European Technical Approvals (ETAs). They comply with relevant Eurocode standards and are individually CE marked. FERBOX is endorsed by CARES Technical Approval and is manufactured under a CARES Quality Management system to the ISO9001 standard.

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Construction sectors

Latest updates

Evolving Concrete 2019 logo

Invisible Connections will be exhibiting at Evolving Concrete 2019

6 Jun 2019

This year, the event will be held on 20 June 2019 at the Royal Berkshire Conference Centre in Reading, Berkshire. Under the theme of ‘Fusing architecture, engineering and sculpture,’ the one day seminar will present industry experts speaking on a selection of topics which are current and relevant to the concrete construction sector. 

PRECAST2019 Conf Expo 2

Meet the Invisible Connections team at PRECAST2019

16 May 2019

Invisible Connections are exhibiting at PRECAST2019 at the Leicester Tigers Stadium on the 16th May. Come and see us on Stand 62.


We hadn’t typically gone the ‘specials’ route before. But, by investing a little upfront time to schedule our FERBOX requirements, we gained a smooth supply and installation process - without wastage or complication - and exceeded the programme demands of our slip-formed cores.

Adrian Paul, Project Manager, O’Keefe Construction (Greenwich) Ltd