The removable holds screwd on the panel ease the climbing and offer additionnal pressholds.Inserted holds are part of the climbing panel and are uneasy to discover while climbing,so that the climbing is more technical and more various.The removable holds are screwed with the help of an allen wrench.They are removable,orientable 30to45 and self-loching thanks to a patented fixing system.Once they are screwed,they cannot turn round and guaranty a safe use for the climber.