The Radical GS/SG is a World Cup Super G and GS race pole with a durable, lightweight triangular aluminum race shaft and World Cup grip. Key Features of the Rossignol Radical GS/SG Ski Poles: Strap WorldCup Velcro - ErgonomicBasket DHTip CarbideShaft Triangular OversizedShaft - diameter 18 mmShaft - type ZicralGrip WorldCup