Salt Rookie US Looseball BB CranksThe Salt Rookie US BB Cranks are an affordable option for beginners wanting to make a start on upgrading their ride. Heat treated chromoly construction throughout makes the Rookie Cranks very strong and stable, with the option of running them either RHD or LHD they're a great beginner option for those starting to dial in on how they want their setup to feel and ride. The Salt Rookie Cranks also come with a US size bottom bracket included.