The Sempu T2 Torque Sensing Bottom Bracket is designed specifically for electric bikes, offering a high-quality steel construction and a durable BSA (English) bottom bracket shell. With a spindle type of Square Taper - JIS and a shell width of 68mm, this Bottom Bracket ensures smooth and efficient power transmission for your e-bike. The set includes the bottom bracket and is compact in size, measuring 12.7cm in length. Made in China, this sleek black bottom bracket is a reliable and essential component for your electric bike.