The Penta, made of glued laminated birchand poplar, are distinguished by their great lightness:220g / unit.The PENTA allows a complete and progressive training.Their unique two sided design offers 7 possibilities of grips(30mm, 25mm, 20mm, 15mm, 10mm, mono, duo)+ handle and a very great ease of use with its 360 °system: Turn to change grips! Designed for warming up and training in suspension and pulling exercises to strengthen the passive and activestructures of the fingers, arms and back.