Specially designed for cranks including the campagnoloreg ultra torquetrade the park tool ht 10 hex tool is designed and built for speed leverage and comfort ht tools feature an ergonomically designed screwdriver grip with an extra long super strong 10mm hex on one end and a ball end hex on the other park tool ht 10 hex tool features specially designed for cranks freehubs and pedals the hex tool is built for speed leverage and comfort the dual density ergonomically