Penta-coneThe penta cone, as suggested by its name, is a five sided cone. While retaining the overall cone shape, this geometrical alternative provides for a different feel, yet remain familiar. They are surprisingly ergonomic! The distinct sides of the cones allow the fingers and thumb to bend naturally along the knuckle joints, and provide a sense of certainty in hand placement. Having 5 sides allow for multiple grip positions to be trained. The penta cone