Metis solution uses the self drilling bolt as a conduit for either air, water or
grout flushing mediums. The medium used is dependent on the ground conditions encountered. For example: Rock would normally require air or water whereas soft or collapsing ground would require grout.
Metis self drilling bolt engineering products provide a service life in excess of 10 years based on research which has been accepted by both Railtrack and the Highways Agency.Our commitment to providing you with the optimum in ground engineering solutions is illustrated by our investment in independent research programmes, which enable us to develop and refine the performance and quality of our products for a wide variety of ground conditions.

Metis offers a wide variety of accessories to complement the entire hollow bar range, providing the flexibility to install the bar in different ground conditions with different drilling equipment to suit different applications. The comprehensive range of accessories includes coupling nuts, centralising spacers, washer plates, adaptor bits, wedge discs, collar nuts and many more ancillary items.