Due to its unique construction, the BB386BSA bottom bracket allows you to use cranks with 30 mm spindles with BSA threaded frames. The cups are made with fully precision-machined alloy to ensure a perfect fit in the frame and the perfect platform for the bearing. This bottom bracket is available with our precision-round ceramic TBT bearings for riders who want an edge, or our high-quality Premium bearings. Specifications Type - Threaded Bearing Type - Ceramic Shell Width - 28.9mm Thread type - English Threaded Spindle Diameter - 30mm Additional Info Country of Origin: Taiwan Imported By: Longshine Global Enterprises Pvt.Ltd , B - 134 Antophill Warehousing Complex , Antophill Wadala East , Mumbai - 400037 , Maharashtra , India. Net Quantity: 1N Customer Care Address: 291, 10 Main, 5 Block, Jayanagar, Bangalore - 560041. Ph: (080)47183232, Email: [email protected] Commodity: Bottom Brackets