Triangular rubber Sky blue Grip 2001 Faber-Castell Grip 2001 sky blue triangular rubber. The original design of the Grip eraser and its ergonomic shape guarantees precise corrections without smudging. The Grip triangular eraser is so impressive that it won the 2003 ISPA award for one of the best products. Like the other products in the Grip series, the rubber contains markings to facilitate grip and reduce fatigue. Suitable for school or office use. Sky blue color. Brand: Faber-Castell.