is a revolutionary steel insert that allows the
use of both countersink and cap head bolts. The cylinder fits on the flat
bottom of the insert; the cone lies on the slanted outer walls.
According to Finite Element Analysis models and
ISO 130 strength tests performed by HRT, hold strength increases by up to as
much as 300 percent. By spreading the internal stresses in the hold more evenly
around the bolt hole, the UBI technology decreases the pressure at the bottom
and spreads it to the sides of the hold, making HRT holds stronger than ever.
The insert is integrated into all HRT bolt-on holds.
ULTRA LIGHT – SUPER
Always innovating and
driven by the idea of creating strong AND lightweight holds, we decided not
only to produce in polyurethane but to go one step further. HRT’s cutting edge
research and design team was the first to come up with this technology many
years ago and ahead of all competitors: Composite Holds. By making our PU holds
with a hollow back, we reduce the hold’s weight by up to one-fifth of the
original weight while still maintaining the
strength. As a result, our Composite holds are the lightest and strongest
climbing holds the world has ever seen.
The feel and durability
are still enhanced when these holds are combined with the new PU formula-
We at HRT are very
concerned about Global Warming and believe that our Composite holds technology
is a tribute to the common desire to use fewer natural resources while
minimizing carbon emissions. By using one-fifth of the material required for
the original holds while providing the most durable holds on the market, HRT is
doing its part to save the environment.