The most innovate thing about the t-blade Runner is that only the gliding surface (which is 1mm thin) is made of steel. The rest of the Runner consists of glass fibre resin. On every t-blade Runner you will find a three figure tuple e.g.: M-13-280. The first figure is a letter (S or M or L) and tells you the rocker of the Runner. The second one is a number between 9 and 21 and describes the radius of the hollow (the lower the number the sharper the edges). The third one is the length of the Runner in Milimeters.
Runners are available in black or white.
Since t-blade Runners have very sharp edges they are to be handled very carefully to avoid injuries. They must NOT be sharpened! Once a Runner is dull it is simply replaced by a new one. Thanks to the design of the Stabilizers this is very easy to do.